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- 1. Multiple Choice
Jamie's podcast has 1,400 subscribers. The number of her subscribers is increasing at a rate of 5.9% each week. Which function would represent her followers after w weeks?
y = 1400(1.059)w
y = 105.9(1400)w
y = 1400(1.59)w
y = 1400(5.9)w
- 2. Multiple Choice
Liliana bought a new laptop for $1100. Each year, the value of the laptop decreases by 12%. At this rate, what can Liliana expect the approximate value of the laptop to be after 9 years?
$3050.39
$348.13
$1224.66
$395.60
- 3. Multiple Choice
The amount of bacteria in a sample after x hours can be represented by the function y = 200(3)x. What does (3)x mean in this context?
There are 3 bacterium at the beginning
The bacteria is tripling every hour
The bacteria is increasing by 3% every hour
The bacteria is decreasing by 3% every hour
- 4. Multiple Choice
What value of x makes this equation true?
4x = 262,144
9
10
11
12
- 5. Multiple Choice
What function is represented by the sequence below?
7, 28, 112, 448 ...
an = 4(7)n-1
an = 7(4)n
an = 7(2)n-1
an = 7(4)n-1
- 6. Multiple Choice
What is a reasonable domain for the sequence below?
7, 28, 112, 448 ...
{1,2,3,4 ...}
{7,28,112,448...}
All real numbers
All positive real numbers
- 7. Multiple Choice
A guitar that costs $1,600 loses 7% of its value every year. What equation would model the value of the guitar, v, after t years?
v = 1600(1.07)t
t = 1600(.93)v
v = 1600(.93)t
t = 1600(1.07)v
- 8. Multiple Choice
The number of subscribers to Francisco's podcast after m months can be modeled by the function y = 150(1.09)m. What is the growth rate of Francisco's listeners?
1.09
109%
90%
9%
- 9. Multiple Choice
The number of subscribers to Francisco's podcast after m months can be modeled by the function y = 150(1.09)m. How many listeners would Francisco have after one year? (You can't have part of a subscriber)
163
421.9
421
163.5
- 10. Multiple Choice
The number of rabbits in Rabbit Forest can be modeled by the function R(x) = a0(3)x, where x is the time in years since the rabbits migrated there.
After five years, 1,458 rabbits are in Rabbit Forest. What was the initial population of rabbits?
3
4
5
6
- 11. Multiple Choice
What value of x makes the equation below true?
52x-3 = 3125
2
4
6
8
- 12. Multiple Choice
What is the equation of the given graph?
y = 2(2/3)x
y = 2(3/2)x
y = 2(1/2)x
y = (2)x
- 13. Multiple Choice
How will the graph of y = 3x translate when the function is changed to y = (3)x-1+4?
Shifted right 1 and up 4
Shifted left 1 and down 4
Shifted left 1 and up 4
Shifted left 4 and up 1
Shifted right 4 and up 1
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