Trisha long wants to buy a boat in five years. she estimates the boat will cost $15,000 at that time. what must trisha deposit today in an account earning 5% annually to have enough to buy the boat in five years?

We use the formula for compound growth to figure this problem out. Formula is:

Where,

Given P=15,000, r=5%=0.05 (in decimal), n=1 (since annual compounding), and t=5 years, we can solve:

So, Trisha Long needs to deposit $11,752.89 today in the account.

ANSWER: $11,752.89

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13