The function f(x)equals 700 represents the rate of flow of money in dollars per year. Assume a 15-year period at 4% compounded continuously. Find (A) the present value, and (B) the accumulated amount of money flow at t equals 15.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.