Answer:
an = 7 + 5n
Step-by-step explanation:
First we know that for each number of days rented the cost increase by 5 so we get an - (?) + 5n.
We also know the first number is 12 for 1 day, so for 0 days, or the starter cost, is 7. We get this by subtracting 5 from 12.
Hence the answer an = 7 + 5n
Answer:
Step-by-step explanation:
Answer:
The radius is growing at a rate of
ft per minute.
Step-by-step explanation:
From the information given we know that

And we know as well that .

Since everything is changing with the time we can compute the implicit derivative and we would get that

We are told that we are looking for how fast is the radius growing at the instant when the radius has reached 1 ft, therefore 
And when we solve for 
Multiply the number of pies by the amount of minutes it takes to bake them
12 x 26.5 = 318