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- 1. Multiple-choice30 seconds1 pt
What is the initial value of the situation represented by f(x)=0.05(2)x?
0.05
2
0.1
1
- 2. Multiple-choice30 seconds1 pt
What is the growth factor of the situation represented by f(x)=10(0.3)x?
10
0.3
1
3
- 3. Multiple-choice30 seconds1 pt
Which variable represents time passed in the function y=abx?
y
a
b
x
- 4. Multiple-choice5 minutes1 ptWrite an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.y=6(0.14)xy=6(1+14)xy=6(1.14)xy=6(0.86)x - 5. Multiple-choice1 minute1 ptWhich of the following functions shows an initial amount of $15 and an increase of 35% each year?y = 15(35)xy = 15(1.35)xy = 15(0.35)xy = 35(1.15)x
- 6. Multiple-choice2 minutes1 ptA new savings account is opened with $400 and gains 3% every year. What is the exponential function?f(x)=400(1+3)xf(x)=400(1-0.03)xf(x)=400(1+0.03)xf(x)=400(0.03)x
- 7. Multiple-choice5 minutes1 ptThe amount of ants in a colony, f, that is decaying can be modeled by f(x) = 800(.87)x, where x is the number of days since the decay started. By what percentage is the colony decaying?87%13%800%8.7%
- 8. Multiple-choice5 minutes1 ptA collectible car has been going up in price by 10% each year. If the car is already worth $29,000, how much will the car be worth in 5 years?$0.29$2,900,000,000$46,704.79$145,000
- 9. Multiple-choice5 minutes1 pt
Write an equation that models the following situation:
The current student count at John Jay is 6500, it is expected to grow at a rate of 14% next year.
y= 6500(1+.14)x
y= 6500(1-.14)x
y= 6500(14)x
y= 14(6500)x
- 10. Multiple-choice5 minutes1 pt
Which of the followings functions shows an initial amout of $15 and an increase of 35% ?
y=15(35)x
y=15(1.35)x
y=15(0.35)x
y=35(15)x
