Does the following equation show growth or decay? y=10,000*1.26x
Growth
Decay
2. Multiple Choice
1 minute
1 pt
Does the following equation show growth or decay? y=10,000*(0.76)x
Growth
Decay
3. Multiple Choice
1 minute
1 pt
Does the following equation show growth or decay? y=10,000*(1-.05)x
Growth
Decay
4. Multiple Choice
1 minute
1 pt
Does the following equation show growth or decay? y=10,000*(1+.05)x
Growth
Decay
5. Multiple Choice
1 minute
1 pt
Does the following equation show growth or decay? y=100*(0.85)x
Growth
Decay
6. Multiple Choice
2 minutes
1 pt
Adding 4 to the equation y=2(1.4)x would do what to the graph?
Move it up 4
Movie it down 4
Move it right 4
Move it left 4
7. Multiple Choice
45 seconds
1 pt
In 1985, there were 285 cell phone subscribers in the small town of Centerville. The number of subscribers increased by 75% per year after 1985. How many cell phone subscribers were in Centerville in 1994?
OVERFLOW
1994
1000
43871
8. Multiple Choice
30 seconds
1 pt
Bacteria can multiply at an alarming rate when each bacteria splits into two new cells, thus doubling. If we start with only one bacteria which can double every hour, how many bacteria will we have after half of a day?
1024
2048
8192
4096
9. Multiple Choice
30 seconds
1 pt
Each year the local country club sponsors a tennis tournament. Play starts with 256 participants. During each round, half of the players are eliminated. How many players remain after 5 rounds?
2
4
16
8
10. Multiple Choice
30 seconds
1 pt
The population of Hickory NC, can be modeled by P=6191(1.04)t where t is the number of years since 1995. What was the population in 1995?
6191
1
1995
1.04
11. Multiple Choice
30 seconds
1 pt
During normal breathing, about 12% of the air in the lungs is replaced after one breath. Write an exponential decay model for the amount of the original air left in the lungs if the initial amount of air in the lungs is 500 mL. How much of the original air is present after 24 breaths?
22.25
23.25
24.25
25.25
12. Multiple Choice
30 seconds
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
13. Multiple Choice
1.5 minutes
1 pt
You buy a new computer for $2100. The computer decreases by 50% annually. How much is it worth after 2 years.
225
325
425
525
14. Multiple Choice
30 seconds
1 pt
. You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%. How long until you have 10mg of caffeine?