Is the pictured graph growth, decay, or linear or none?
Exponential Growth
Exponential Decay
Linear
None
2. Multiple Choice
1 minute
1 pt
Find the exponential model of the function.
y = 100(8.8)x
y = 100(1.88)x
y = 100(.88)x
y = 100(.12)x
3. Multiple Choice
30 seconds
1 pt
A chemist has a 100-gram sample of a radioactive material. He records the amount of radioactive material every week for 6 weeks and obtains the following data: How much is left after 12 weeks?
15
21
17
19
4. Multiple Choice
1 minute
1 pt
Write the exponential regression equation for this data.
Y = 8.16(2.7)X
Y = 81.6(2.7)X
Y = 8.16(.27)X
Y = 8.16(27)X
5. Multiple Choice
1 minute
1 pt
Write the exponential regression equation for this data.
Y = 8.16(2.7)X
Y = 81.6(2.7)X
Y = 8.16(.27)X
Y = 8.16(27)X
6. Multiple Choice
30 seconds
1 pt
Predict the year when Sugar Land’s population will reach 75,000.
2015
1991
1992
2010
7. Multiple Choice
30 seconds
1 pt
After 9 days, approximately how many grams of this substance will exist?
about 64244
about 173602
about 23774
about 469111
8. Multiple Choice
2 minutes
1 pt
Greenville is having a blizzard. It has already snowed 1 inch and the total will double each hour. Write an equation for the total inch of snow in x hour.
y=1(2)x
y=1(1/2)x
y=2(1/2)x
y=2(2)x
9. Multiple Choice
5 minutes
1 pt
In an exponential function, what does the 'a' represent?
SLOPE
RATE OF CHANGE
Y-INTERCEPT
COMMON RATIO
10. Multiple Choice
1.5 minutes
1 pt
What is the equation of this table?
y=512(1/4)x
y=32(4)x
y=32(1/4)x
y=512(4)x
11. Multiple Choice
2 minutes
1 pt
A new savings account is opened with $400 and gains 3% every year. What is the exponential function?
f(x)=400(1+3)x
f(x)=400(1-0.03)x
f(x)=400(1+0.03)x
f(x)=400(0.03)x
12. Multiple Choice
2 minutes
1 pt
The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the exponential equation?
y=8(15,000)x
y=15,000(1.08)x
y=15,000(0.92)x
y=15,000(0.08)x
13. Multiple Choice
2 minutes
1 pt
g(x)=3(2)x Find g(3)
216
24
18
28
14. Multiple Choice
2 minutes
1 pt
An adult takes 800 mg of ibuprofen. Each hour, the amount of ibuprofen in the person’s system decreases by about 29%. How much ibuprofen is left after 6 hours?
101
102
103
104
15. Multiple Choice
5 minutes
1 pt
Your shiny new boat cost $7650. The depreciation for your boat is 14% per year. What is the decay factor?
0.14
14
1.14
.86
16. Multiple Choice
5 minutes
1 pt
Which of the equations below represent this table?
y=3⋅(36)x
y=36⋅(3)x
y=3⋅(⅓)x
y=36⋅(⅓)x
17. Multiple Choice
5 minutes
1 pt
Write the equation that represents the table below:
y=½(4)x
y=2(4)x
y=4(2)x
y=4(½)x
18. Multiple Choice
45 seconds
1 pt
Describe the association of the scatter plot
Linear
Linear; negative association
Exponential; Growth
Exponential; Decay
19. Multiple Choice
1.5 minutes
1 pt
Use the exponential regression to find an equation that fits the data, where x is the years since 1990.
y=8.92•1.23x
y=1.23•8.92x
y=8.92+1.23x
y=8.92x+1.23
20. Multiple Choice
30 seconds
1 pt
Please round your decimals to the nearest hundredth in your exponential regression!!!!!! What is the estimated number of cell phone subscribers in 2018?