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HW Review for Test 3/28

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Last updated almost 3 years ago
10 questions
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Question 1
1.

What is the y-intercept? (sub in 0 for x)

Write as an ordered pair (x,y)

Question 2
2.

What is the starting amount of caffeine in each person's bloodstream?

Question 3
3.

In which person is the caffeine decreasing the fastest?

Question 4
4.


How much remains after 4 days?
Round to the nearst whole percent.

Question 5
5.

Movie tickets now cost $15 a ticket, but are increasing 10% per year. How much will they cost in 5 years (if there are still movie theaters that is)????
y=a(1+r)^t
Round to the nearest hundredth.

Question 6
6.

Use the fact that minimum wage was $7.25 in 2009, and $6.55 in 2008 to find the growth factor for wages.



Write the growth factor rounded to 3 decimal places. Hint: divide

Question 7
7.

Use your growth factor from last problem to solve.
Start with $7.25 in 2009. If minimum wage would have continued to increase at the same rate, what should minimum wage be currently?


y=a(1+r)^t

Question 8
8.

Question 9
9.

Question 10
10.

Sort each as either growth or decay
The value of a motorcycle depreciates in value each year
the value of a 1962 ferarri appreciates in value each year
Growth
Decay
Categorize each type of function.
exponential growth
exponential decay
Linear
Quadratic
Sort each as either growth or decay.
exponential growth
exponential decay
Linear
Quadratic