1-3 USA Review

Sarah wrote the function c(x)=−3x−12 to determine the cost of buying shirts for her school's spirit day for x number of students.

What is the possible domain of the function Sarah wrote?

• The set of whole numbers

• The set of all real numbers

• The set of rational numbers

• The set of integers

The expression below represents the total cost, in dollars, for Chris to purchase some new Xbox games, including tax.

 $1.06\left(39+12x\right)$  
If x represents the number of games Chris purchases, which of the following statements is correct? Select all that apply!!!

• The cost of a game with tax is $12.72.
  

• Each game cost 12 dollars.

• The sales tax is 6%.
  

• Each game cost $39.
  

• Chris received a 6% discount.
  

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Which set of values is a function?

• (1,5) (2,5) (1,-5) (2,-5)

• (3,10) (5,-3) (7,4) (3, 8)

• (6,1) (7, 2) (8, 2) (9, 1)

• (1, -2) (5, 8) (5, -7) (3, 4)

Solve the inequality and graph on a number line:

14 x - 3 ≤ -3 (The red arrows show the graphs.)

• A) x ≤ 0

• B) x ≤ 2

• x > 0

• x ≥ -2

Solve the inequality and graph on a number line:

12 - 2x < 16 (The red arrows show the graphs.)

• D. x > 0

• A. x ≤ 0

• C. x > -2

• B. x ≤ 2

 $\left(m^{\frac{4}{7}}\right)^{\frac{7}{4}}$  

•  $m^{11}$  

•  $m^{\frac{11}{28}}$  

•  $m^1$  

•  $m^{\frac{28}{11}}$  

Chris weighs 175 pounds and is driving a truck that can carry no more than 2500 pounds. He plans to use the truck to move furniture to his new apartment. Write an inequality that shows the number of 30-pound moving boxes, b, Chris can back in his truck.

• 
  

  $b\le89$
  

• $b\le78$

• $b\le77.2$

• $b\le77$

Santa decided to start selling toys throughout the year instead of delivering them on Christmas Eve. He sold 3400 toys last Christmas, and after Christmas, he sold an average of 105 each day. Which equation models the number of toys, t, Santa sold after d days?

• 
  

  $d=3400+105t$
  

• $d=3400t+105$

• $t=3400t+105$

• $t=3400+105d$

Select the point that IS NOT in the solution set graphed above.

• (1, 2)

• (-4, 0)

• (-2, 1)

• (4, 4)