Answer:
11.4 years
Step-by-step explanation:
We assume you want to know the time it takes for Lucy's investment of $1200 to have a value of $6400. The compound interest formula is good for finding that.
FV = P(1 +r/n)^(nt)
for principal P invested at rate r per year for t years, compounded n times per year. We want to find t such that ...
6400 = 1200(1 +0.15/4)^(4t)
16/3 = 1.0375^(4t) . . . . divide by 1200
log(16/3) = 4t·log(1.0375) . . . . take logarithms
t = log(16/3)/(4·log(1.0375)) ≈ 11.4
It will take about 11.4 years for Lucy's investment value to be $6400.
Answer:
10
Step-by-step explanation:
you do step by step math and after you do that you will get 10
Answer:
Step-by-step explanation:
I don’t understand the equation but you can use Photomath to solve any equation you need to solve. It’s and app for free.
2^2a^2+b^2
4a^2+b^2
not sure if this is correct but here ya go
