Warm-Up.

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Presentation transcript:

Warm-Up

HW Check

Unit 4 Day 7 Writing Equations

EX 1: A moving van rents for $29. 95 a day plus $0. 12/mi. Ms EX 1: A moving van rents for $29.95 a day plus $0.12/mi. Ms. Smith’s bill for a two-day rental was $70.46. How many miles did she drive? What do we know? a. What is the goal? b. How long did Ms. Smith rent the van? c. What does the van cost without mileage? d. What is the charge per mile?

EX 1: A moving van rents for $29. 95 a day plus $0. 12/mi. Ms EX 1: A moving van rents for $29.95 a day plus $0.12/mi. Ms. Smith’s bill for a two-day rental was $70.46. How many miles did she drive? two days•$29.95/d + $0.12/mi• number of miles= $70.46 2 • 29.95 + 0.12 • m = 70.46 Solve the equation. 88 miles

Ex 2: Wendy bought a drill at 10%-off sale. The sale price was $75. 60 Ex 2: Wendy bought a drill at 10%-off sale. The sale price was $75.60. Find the original price.

Ex 3: The perimeter of a rectangle is 64 cm Ex 3: The perimeter of a rectangle is 64 cm. The length is 4 cm less than twice the width. Find the length and width.

Ex 4: A moving van rents for $29. 95 a day plus $0. 12 a mile. Mr Ex 4: A moving van rents for $29.95 a day plus $0.12 a mile. Mr. Reynolds’ bill was $137.80 and he drove the van 150 miles. For how many days did he have the van? Ex 5: The sale price of a sweater is $48. The price is 20% less than the original price. What was the original price? Ex 6: Elena has $240 in the bank. She withdraws $15 each week to pay for piano lessons. How many lessons can she afford with her savings?