Unit 1 Test - Review

Which of the following graphs represents a function? Select all that apply.

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Which of the following tables represent a function? Select all that apply.

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A plumber charges $50 to make a house call plus $40 for each hour worked. Which equation represents the total cost of a plumbing service?

• C=h(40+50)

• C=50h+40

• C=40h+50

• C=40+50+h

What property Justifies step 2?

• Division Property of Equality

• Combine Like Terms

• Subtraction Property of Equality

• Substitution

Which step is the result of combining like terms?

• Step 1

• Step 2

• Step 3

• Step 4

 $4\left(-2x+5\right)\ge84$  Solve

•  $x\ge-8$  

•  $x\le-8$  

• x $x\ge8$  

•  $x\le8$  

 $3\left(x-3\right)=-15$  

Solve for x.

• 8

• -8

• 2

• -2

Solve for x

 $5x+34=-2(-7x+1)$  

• 4

• -4

• 9

• -9

Write an equation

Penelope is going to the carnival to ride the rides. It costs $20 to get into the carnival and ride tickets are $0.50 each. Write an equation that represents this scenario if she spends $35 in all.

•  $.50x+20=35$  

•  $.50+20x=35$  

•  $.50x=35$  

•  $.50x-20=35$  

Write an equation

8 less than twice a number is 3 more than the number.

•  $2+x-8=3+x$  

•  $8-2x=x+3$  
  

•  $2x-8=x+3$  

•  $8-2+8=3+x$