Quiz about Unit 5A Test Review

Question 1

In an exponential function, what does the 'a' represent?

Accepted Answer

Y-INTERCEPT

Answer

SLOPE

Answer

RATE OF CHANGE

Answer

COMMON RATIO

Question 2

Write the equation of the exponential function for the given graph.

Accepted Answer

y = 1(2)x

Answer

y = 2(2)x

Answer

y = 2(1)x

Answer

$$y=1\left(\frac{1}{2}\right)^x$$

Question 3

The equation for this table is

Accepted Answer

y = 50(3)^x

Answer

y = 3x + 50

Answer

y = 50x

Answer

y = 3x

Question 4

Write the equation of the exponential function for the given graph.

Accepted Answer

$$y=2\left(\frac{1}{2}\right)^x$$

Answer

y = 1(2)x

Answer

y = 2(1)x

Answer

$$y=\frac{1}{2}\left(2\right)^x$$

Question 5

The equation for this table is

Accepted Answer

y = 1(12^x)

Answer

y = 1(2x)

Answer

y = 12x

Answer

y = 12x + 1

Question 6

What is Mrs. Carcamo's average rate of change from 0 < x < 2 seconds?

Accepted Answer

2.5 feet per second

Answer

.4 feet per second

Answer

5 feet per second

Answer

.2 feet per second

Question 7

Find the average rate of change over the given interval [0,2]

Accepted Answer

-15/2

Answer

2/15

Answer

2

Question 8

What type of function is f(x)=2(1/7)^x ?

Accepted Answer

Exponential Decay

Answer

Exponential Growth

Answer

Linear

Answer

None of the Abovee

Question 9

What type of function is f(x)=2(1.04)^x ?

Accepted Answer

Exponential Growth

Answer

Linear

Answer

Exponential Decay

Answer

None of the Abovee

Question 10

Which graph could be representing by the equation y=5(4)^x

Accepted Answer

Question 11

Which of the following statements is TRUE

Accepted Answer

As x decreases, f(x) approaches, but never reaches, -3

Answer

The x intercept is -1

Answer

The range is all real numbers

Answer

The asymptote is y = -2

Question 12

Which of the following statements is NOT TRUE

Accepted Answer

The X intercept is at -1

Answer

The Y intercept is -2

Answer

The asymptote is y = -3

Answer

The domain is all real numbers

Question 13

Which of the following statements is TRUE

Accepted Answer

The asymptote is y = -3

Answer

The positive interval is all real numbers.

Answer

as $$x\rightarrow\infty,\ y\rightarrow-3$$

Question 14

Evaluate f(x) = 2^x-1, find f(3)

Accepted Answer

7

Answer

3

Answer

8

Answer

1

Question 15

Moody's Print Shop purchased a new printer for $35,000. Each year it depreciates at a rate of 5%. How much will the printer be worth in 8 years?

Accepted Answer

$23,219.72

Answer

$136.72

Answer

$51,710.94

Answer

$16,710.94

Question 16

What is the positive interval of this graph?

Accepted Answer

(-1, $$\infty$$ )

Answer

(-2, $$\infty$$ )

Answer

None

Answer

(- $$\infty$$ , $$\infty$$ )

Question 17

What is the negative interval of this graph?

Accepted Answer

(- $$\infty$$ ,-1)

Answer

(-2, -1)

Answer

None

Answer

(-1, $$\infty$$ )

Question 18

True or False. The interval of increase is $$\left(-\infty,\infty\right)$$

Accepted Answer

True

Answer

False

Question 19

True or False. The end behavior of this graph is $$as\ x\rightarrow-\infty,\ f\left(x\right)\rightarrow-2$$ and $$as\ x\rightarrow\infty,\ f\left(x\right)\rightarrow\infty$$

Accepted Answer

True

Answer

False

Unit 5A Test Review

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