Word Problems & Inequalities Continued…

Ex. 1Ex. 1Ex. 1Ex. 1

Sarah has offers for a position at two local electronics stores.

Store A will pay a flat rate of $55 per day plus 3% of sales. Store B will pay a flat rate of $40 per

day plus 5% of sales. What do Sarah’s sales need to be for Store B to be the better offer?

a) Write an inequality to model the problem.

b) Solve the inequality and interpret the solution.

Ex. 2Ex. 2Ex. 2Ex. 2

Jason is saving up to buy a digital camera that costs $490. So far, he saved $175. He would like

to buy the camera 3 weeks from now. What is the equation used to represent how much he

must save every week to have enough money to purchase the camera?

Ex. 3Ex. 3Ex. 3Ex. 3

Jessica is getting ready for college she needs to have an overall grade of 85 in her Math class to

qualify for the college that she wished to attend. Her math grade is based solely on her scores

on 6 exams. On the first 5 exams her scores were 87, 81, 85, 90, 78. Write an inequality that

represents her predicament. What does score does she need to get on her last test to qualify?

Basic Numbers Word Problems

Ex. 4

Two-thirds of a number plus 5 is greater than 12. Solve the inequality.

Ex. 5

The sum of a number and 81 is greater than the product of −3 and that number. What are the

possible values for the number?

Homework:

P. 348 #16, 17, 20

P. 358 #14, 18, 19

P. 365 #8, 10 - 14