Writing and Evaluating Expressions

Lisa makes $23.50 an hour at her job, and every week she pays $25 to her health insurance. How much money did Lisa make if she worked 35.8 hours last week? $587.50 $841.30 $816.30 $895.00

$816.30

Evaluate the expression shown for x = 9. mc001-1.jpg mc001-2.jpg mc001-3.jpg mc001-4.jpg mc001-5.jpg

-1/2

Evaluate the expression shown for x = 12. mc001-1.jpg mc001-2.jpg -3 mc001-3.jpg mc001-4.jpg

-3

Mason opens a savings account by making a $165.85 deposit. Every week, he deposits another $20.50 in the account. Write an expression that shows the amount of money that will be in the account x weeks after Mason opens it. 165.85x + 20.5 165.85 - 20.5x 165.85 + 20.5 + x 165.85 + 20.5x

165.85 + 20.5x

Larry's pet store made $30 before a pipe burst and he had to close early to get it fixed. He realized that he lost es001-1.jpg of a dollar each hour that the store was closed. If the expression that models this situation is 30 es001-2.jpg, what is Larry's profit if the store was closed for 8 hours? $

24

Mason opens a savings account by making a $165.85 deposit. Every week, he deposits another $20.50 in the account. The following expression shows the amount of money that will be in the account x weeks after Mason opens it. 165.85 + 20.5x How much money will be in the account after 10 weeks? After 10 weeks, there will be $ in the account.

370.85

Daniel has 15 yards of fabric to make baby blankets. It takes 1 and 1/2 yards of fabric to make each blanket, and the expression that models the situation is mr001-1.jpg. Which of the following are possible numbers of blankets that Daniel could make? Select all that apply. 9 10 11 12 15

9 10

Gaira was asked to evaluate the algebraic expression -3.8x + 6 when x = -7.5. -3.8(-7.5) + 6(-7.5) 28.5 + (-45) (-16.5) What mistake did she make? What is the correct answer? Check all that you included in your response. She multiplied both terms by -7.5. Only -3.8 should have been multiplied by -7.5. She substituted incorrectly. The correct answer is 34.5.

Gaira made a mistake when substituting the value -7.5 in for x. She multiplied both terms of the expression by -7.5 when she should have only multiplied -3.8 by -7.5. The correct answer is 34.5. She multiplied both terms by -7.5. Only -3.8 should have been multiplied by -7.5. She substituted incorrectly. The correct answer is 34.5.

Myra is evaluating the expression -31.7 + 4.5x, when x = 2.1. -31.7 + 4.5(2.1) -27.2(2.1) -57.12 What was Myra's error? Myra should have multiplied -31.7 and 2.1 first. Myra should have multiplied 4.5 and 2.1 first. Myra should have subtracted -27.2 and 2.1 first. Myra should have added -31.7 and 2.1 first.

Myra should have multiplied 4.5 and 2.1 first.

Check all that you included in your response. She multiplied both terms by -7.5. Only -3.8 should have been multiplied by -7.5. She substituted incorrectly. The correct answer is 34.5.

She multiplied both terms by -7.5. Only -3.8 should have been multiplied by -7.5. She substituted incorrectly. The correct answer is 34.5.

Daniel's tennis team made $582.85 from running the concession stand at a basketball game. The food and drinks cost the team $64. What expression would model the amount of money each player would receive if the money is divided equally? How much would each player receive if there are 8 players on the tennis team?

The answer would be 1. (582.85 - 64)/p Or D And 2. 64.85 Or A