Math 8 Final Review Day 2

Freddie borrowed $80 from his brother to buy a new bike, and he is paying him back $11 each month. Describe the graph of a function that describes the amount Freddie owes his brother over time.

• straight line going upward

• straight line going downward

• curved line going upward

• curved line going downward

Tags

CCSS.8.EE.B.5

Use the Pythagorean Theorem to find the missing measure.

 $a^2+b^2=c^2$  

• 64

• 136

• 8

• 12

Tags

CCSS.8.G.B.7

Use the Pythagorean Theorem to find the missing measure.

$a^2+b^2=c^2$

• 169

• 13

• 119

• 11

Tags

CCSS.8.G.B.7

Which function has the least rate of change?

• $y=4x-10$

• $\left(1,\ 6\right)\ \left(2,\ 11\right)\ \left(3,\ 16\right)\ \left(4,\ 21\right)$

• Marissa earns $8 per hour babysitting her niece.

• 

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

What is the solution to the system of equations:

 $y=2x+12$  
 $y=6x-8$  

•  $\left(2,\ 16\right)$  

•  $\left(5,\ 22\right)$  

•  $\left(1,\ 14\right)$  

• No solutions

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

1. The population of a particular country is 3 x 10⁶. The population of a city inside the country is 1.5 x 10⁵. Write each population in standard form. About how many times as great is the population of the country as the population of the city?

• $1\times10^1$

• $1.5\times10^1$
  

• $2\times10^1$
  

• $4.5\times10^{11}$

Tags

CCSS.8.EE.A.4

Simplify the expression:  $\left(-4\right)^{-2}\ \times\left(-4\right)^5$  

•  $\left(-4\right)^3$  

•  $\left(-4\right)^{-3}$  

•  $\left(-4\right)^7$  

•  $\left(-4\right)^{-10}$  

Tags

CCSS.8.EE.A.1

Simplify the expression:  $\frac{x^{10}}{x^2}\$  

•  $x^5$  

•  $x^{12}$  

•  $x^{-8}$  

•  $x^8$  

Tags

CCSS.HSA.APR.A.1

The scatter plot shows the relationship between the hot water remaining g, in gallons, compared to shower time t, in minutes, from the start of the shower. The equation of a trend line that models the data is  $g=-2t+45$   . Using the equation of the trend line , about how much hot water remains after 15 minutes?

• 20

• 45

• 15

• 60

Tags

CCSS.HSF-IF.C.7A

Which relation represents a function?

• $\left(6,\ 2\right)\left(-1,\ 2\right)\left(-3,\ 2\right)\left(-1,\ 5\right)$

• $\left(-5,\ 6\right)\left(5,\ 6\right)\left(10,\ 6\right)\left(15,\ 6\right)$

• $\left(3,\ 1\right)\left(5,\ 15\right)\left(3,\ 30\right)$

• $\left(-4,-1\right)\left(-1,-2\right)\left(1,-2\right)\left(-1,-3\right)$

Tags

CCSS.8.F.A.1