Expressions, Equations, Tables and Graphs

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

Evaluate the following expression:
-3x² - 5x + 7 when x = -2

• 5

• 10

• 12

• 7

Evaluate the following expression:
t² - t + 1 when t = 5

• 25

• 22

• 23

• 21

A phone company charges a sign-up fee of $3.50, plus $x for every hour the phone is used. If Brian talked on the phone for 12 hours and paid a total of $75.50, which of the following equations can be used to find, x, the hourly rate of the phone plan?

• 3.50 + x = 75.50 

• 3.50 - x = 75.50 

• 75.50 + 12x = 3.50 

• 3.50 + 12x = 75.50

Which equation matches the table?

• y = 3x + 9

• y = x + 9 

• y = x + 3

• y = 12x - 3

Which is the graph of y= -x + 2?

• A

• B

• C

• D

Which graph matches the table?

• A

• B

• C

• D

What does the point (2, 94) represent in this situation?

• Every week, they earn $94.

• After 94 weeks, they save $2.

• After 1 week, they save $47.

• After 2 weeks, they save $94.

Nadea has $600 in her savings account. She withdraws $35 per week to buy gas for her car. Which equation can be used to determine how many weeks, w, it will take for Nadea to reduce her balance to $285?

• (600 – 35)w = 285 

• 35w – 600 = 285 

• 600 – w = 285 

•  600 – 35w = 285

Write the equation of the line.

• y= -1x-3

• y= -3x-1

• y=(-1/3)x-1

• y= -3x-3