Report

Solving Multi-Step Equations An alligator hatchling 6 inches long grows about 12 inches per year. The expression 12a + 6 represents the length in inches of an alligator that is "a" years old. ·What does the number 6 represent in the expression 12a + 6? ·What does the 12a represent in the expression 12a + 6? ·What does this expression assume about the growth of an alligator over its lifetime? ·How old is the alligator if it is 11 feet 6 inches long? 7m - 17 = 60 21 = 14 2a - 6 = 4 8 = 3r + 7 t/8 + Two-Step Grade: Algebra Subject: Date: 1 5q - 13 = 27 2 4g - 2 = -6 3 18 = 5p + 3 4 9 = 1 + m/7 5 (3/2)a - 8 = 11 ·(p - 15)/9 = - 6 p = -39 ·(k - 12)/5 = 4 k = 32 ·(n + 1)/ -2 = 15 n = - 31 binomial-Proportion Grade: Algebra Subject: Date: 1 20 = (n - 3)/8 2 (b + 4)/ -2 = - 17 Allen is buying a pair of water skis that are on sale for 2/3 of the original price. After he uses a $25 gift certificate, the total cost before taxes is $115. What was the original price of the skis? Write an equation for the problem and solve. (2/3)p - 25 = 115 p = $210 Susan had a $10 coupon for the purchase of any item. She bought a coat that was on sale for ½ its original price. After using the coupon, Susan paid $125 for the coat before taxes. What was the original price of the coat? Write and solve and equation. (½)p - 10 = 125 p = $270 Alex belongs to the Student Music Club and bought a discount card for $19.95. After one year, Alex has spent $63.40. Each CD cost $3.95. Write and solve an equation to find ho many CDs Alex bought during the year. Total Cost = Cost of CDs + Cost of Discount Card 63.40 = 3.95C + 19.95 Solve. 11 = C, or Alex bought 11 CDs during the year. Sara paid $15.95 to become a member at a gym. She then paid a monthly membership fee Her total cost for 12 months was $735.95. How much was the monthly fee? Total Cost = Monthly Fee + Membership Fee 735.95 = 12 F + 15.95 Solve. F = 60, or Sara paid $60 each month. Lynda has 12 records in her collection. She adds the same number of new records to he collection each month. After 7 months Lynda has 26 records. How many records does Lynda add each month? Total Number = Number Added each month + Original Number 26 = 7R + 12 Solve. R = 2, or Lynda adds 2 new records each month. Jan joined the dining club at the local cafe for a fee of $29.95. Being a member entitles her to save $2.50 every time she buys lunch. Jan calculates that she has saved a total of $12.55 so far by joining the club. Writes and solve an equation to find how many times Jan has eaten lunch at the cafe. Total Savings = Savings each time - Original Fee 12.55 = 2.50x - 29.95 Solve. x = 17, or Jan has eaten lunch 17 times at the cafe. Application Grade: Algebra Subject: Date: 1 Twelve decreased by twice a number equals - 34. Write and solve an equation. A 23 B 35 C 92 D 17.5 2 The English alphabet contains 2 more than twice as many letters as the Hawaiian alphabet. How many letters are there in the Hawaiian alphabet? Simplify Before Solving Justify each step 6x + 3 - 8x = 13 6x - 8x + 3 = 13 Commutative (6x - 8x) + 3 = 13 Associative x(6-8) + 3 = 13 Distributive -2x + 3 = 13 -3 -3 Sub. Prop of Equality -2x = 10 /-2 /-2 Div. Prop of Equality x = -5 Simplify Before Solving Justify each step 2a + 3 - 8a = 8 a = (-5/6) Simplify Before Solving Justify each step -8 - 2d + 2 = 4 d = -5 Simplify Before Solving Justify each step 4x - 8 + 2x = 40 x=8 Simplify Before Solving Justify each step 8x - 21 - 5x = -15 x=2 Simplify Before Solving Justify each step 4 = 2x + 5 - 6x x = (1/4) Write and Solve an equation for the following problem. Find three consecutive even integers whose sum is -42. Let n = the least even integer Then n + 2 = the next greater even integer and n + 4 = the greatest of the three even integers. n + (n + 2) + (n + 4) = - 42 n = -16 -16, -14, -12 Consecutive Integers Grade: Algebra Subject: Date: 1 Find three consecutive integers with a sum of 42 A 12,13,14 B 13,14,15 C 14,15,16 2 Find three consecutive even integers with a sum of -12 A -2, 0, 2 B -4, -2, 0 C -6, -4, -2 3 What is the greatest integer for the following: Find three consecutive odd integers whose sum is 57. Math Is Everywhere!.mp3 Simplifying Using the Distributive Property 9 = 6 - (x + 2) 9 = 6 + (-1)x + (-1)2 9 = 6 + -1x + -2 9 = (6-2) + -1x 9=4-x 5 = -x -5 = x Simplifying Using the Distributive Property 4(x + 1) + 2( x - 7) = 50 4x + 4(1) + 2x + 2(-7) = 50 4x + 4 + 2x + -14 = 50 (4x + 2x) + (4 - 14) = 50 6x - 10 = 50 x = 10 Simplifying Using the Distributive Property 5(p - 2) = -15 p = -1 Simplifying Using the Distributive Property 10y - (4y + 8) = -20 y = -2 Distributive Property Grade: Algebra Subject: Date: 1 5(2y - 7) + 8(y + 6) = 31 2 4x - 3(6 + x) - 1 = 2 3 17 - (4 - 6z) + 4 = 42 4 42r - 2(13 - 5r) + 7 = 85 5 3(x - 2) - 5(2x + 1) = 3 Attachments Math Is Everywhere!.mp3