Question 204084
We need the formula:

A = P(1 + r/n)^(nt)

P = principal amount (initial investment) 
r = annual nominal interest rate (as a decimal) 
n = number of times the interest is compounded per year 
t = number of years 
A = amount after time t in years 

Let R = P

Let i = r

Let n = 4 for quarterly

Let t = 16 years

We are looking for A.

A = 2500(1 + 0.07/4)^(4)(16 years)

A = $7588.27