Unit 2 Test Review

Unit 2 Test Review

Multiple Choice

• 16c³d³

Multiple Choice

(5x²y²)³

• 125x⁶y⁶
• 15x⁶y⁶
• 8x⁵y⁵
• 15x⁵y⁵

Multiple Choice

• $\frac{27x^{15}z^3}{y^6}$

• $\frac{9x^{15}z^3}{y^6}$

• $27x^8yz^4$

• $\frac{27x^8z^4}{y}$

Multiple Choice

What is 10⁰ equivalent to?

• 1

• 10

• 0

• 100

Multiple Choice

Simplify. Express your answer as a single term using exponents.

 $7^{-6}\ \times7^2\ \times7^{-4}$  

•  $7^{-8}$  

•  $7^{12}$  

•  $7^{48}$  

•  $343^{48}$  

Multiple Choice

Simplify.

2x^-5y⁷⋅3x^-4y^-2

• $6x^9y^9$

• $\frac{6y^5}{x^9}$

• $\frac{6}{x^9y^5}$

• $\frac{6}{x^9y^9}$

Multiple Choice

What pet does Ms. Maresca have at home?

• horse

• guinea pig

• dog

• cat

Multiple Choice

The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)^t where t is the number of years since 1990. What percent did the population increase each year?

• 4%

• 0.04%

• I don't know

• 1.04%

Multiple Choice

The value of a car purchased for $50,000 decreases at a rate of 12% per year. The equation modeled by this situation is 

 $y=50000\left(.88\right)^x$  What does 50000 represent? 

• percent of change

• initial price of the car

• final price of the car

• common ratio

Multiple Choice

This is an example of a

• continuous exponential function

• discrete exponential function

• continuous linear function

Multiple Choice

Discrete or Continuous?

• Discrete

• Continuous

Multiple Choice

The number of dogs Mrs. Jacobsen has would be considered

• continuous data

• discrete data

• neither

Multiple Choice

The grocery store sells cantaloupes for $4.50 per pound.  Is the function continuous or discrete?  Explain.

• continuous; you cannot have a fraction of a pound when you weigh cantaloupes
• continuous; you can have a fraction of a pound when you weigh cantaloupes
• discrete; you cannot have a fraction of a pound when you weigh cantaloupes
• discrete; you can have a fraction of a pound when you weigh cantaloupes

Multiple Choice

Which of the following is an example of a continuous function?

• number of people in your class

• number of questions on a test

• outdoor temperature at noon

• number of laptops in your house

Multiple Choice

What pet does Ms. Connelly have at home?

• snake

• cat

• dog

• hamster

Multiple Choice

In the equation y=mx+b,
what does m represent?

• Nothing in particular
• The y-intercept
• The x-intercept
• Slope

Multiple Choice

In the equation y=mx+b,

what does b represent?

• nothing in particular

• slope

• x - intercept

• y - intercept

Multiple Choice

Name the slope

• 3
• 1
• -1x
• -1

Multiple Choice

What is the y-intercept of the line with the equation
 $y\ =\ -2x\ +\ 4$  

•  $-2$  

•  $2$  

•  $4$  

•  $-4$  

Multiple Choice

Name the y intercept

• -1
• 7
• -1x
• -7

Multiple Choice

What is the slope of the line with the equation
 $y\ =\ -\frac{3}{2}x\ +\ 4$  

•  $-\frac{3}{2}$  

•  $\frac{3}{2}$  

•  $4$  

•  $-4$  

Multiple Choice

Write a linear equation in slope intercept form of a line with a slope of 12 and y intercept of 10.

• y=12x-10

• y=10x+12

• y=12x+10

• x=10x-12

Multiple Choice

What is the equation of this line?

• y = 2x +2
• y = 2x -2
• y = -x + 2
• Cannot be Determined

Multiple Choice

Write the equation of the line.

• y = -1/3x - 2
• y = 1/3x - 2
• y = 3x - 2
• y = -3x - 2

Multiple Choice

Write an equation in point slope form of equation of line
point (7,10) and has a slope of -2?

 $y\ -\ y_1\ =\ m\left(x\ -x_1\right)$  

• y-10 = -2(x+7)

• y-10 = -2(x-7)

• y+10 = -2(x+10)

• y -10 = -2x+2

Multiple Choice

Write equation of a line in point slope form that passes through (3,8) and has a slope of 5?

 $y\ -\ y_1\ =\ m\left(x\ -x_1\right)$  

• y-8=5(x-3)

• y=5x+8

• y-3=5(x-8)

• y-y₁₌ m(x-x₁₎

Multiple Choice

Write the slope-intercept form of the equation with the given point and slope. m = 5 through ( - 1, - 3 )

 $y\ -\ y_1\ =\ m\left(x\ -x_1\right)$  

• y = 5x + 2

• y = - 5x - 5

• y = - 5x + 2

• y = 2x - 5

Multiple Choice

Write the slope-intercept form of the equation with the given point and slope. ( - 1,4 ) and m = - 3

• y = x - 3

• y = - 3x + 1

• y = x + 2

• y= - 3x + 4

Multiple Choice

What is the equation of the line that goes through the points ( 3, - 1 ) and ( 2, - 4 )?

• y = 3x - 4

• y = - 3x + 8

• y = 3x - 1

• y = 3x - 10

Multiple Choice

Write the equation of the line that passes through the points ( 0, - 5 ) and ( 4, 3 )

• y = 2x - 5

• y = 1/2x - 5

• y = 2x + 5

• y = 1/2x + 5

Multiple Choice

Solve this riddle.

• Spots

• Letters

• Legs

• Feet

Multiple Choice

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage.  If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (C)?

• C = 15 + 0.20x
• C =15 (0.20x)
• C = 15 + x + 0.20
• C = 0.20 + 15x

Multiple Choice

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat.  Write an equation for C, the total cost, to rent the boat for h hours.

• h = 2C + 15
• C = 15h + 2
• h = 15C + 2
• C = 2h + 15

Multiple Choice

Which of the following are ways to find the rate of change?

• change in y over change in x
• rise over run
• subtract y coordinates over subtract x coordinates
• all of the above

Multiple Choice

The average movie ticket prices in the US are represented in a table and a graph. Based on this information, what value is closest to the average rate of change for 1990 - 2010?

• $0.03

• $0.18

• $1.48

• $3.67

Multiple Choice

What was the average rate of change in the number of fish caught per week between weeks 2 and 5?

• about 13 fish per week

• about 18 fish per week

• about 32 fish per week

• about 40 fish per week

Multiple Choice

What is the average rate of change of milk prices between 1976 and 1993?

• 0.06

• 0.05

• 0.04

• 0.03