Answer:

We can use the formula for compound interest to calculate the number of years it will take for Amanda's investment to grow to P750,000:

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

Where:

A = the final amount (750,000 in this case)

P = the initial principal (500,000 in this case)

r = the annual interest rate (14% in this case)

n = the number of times the interest is compounded per year (semi-annually in this case)t = the number of years the money is invested (unknown)

We can solve for t by rearranging the formula to:

t = log(A/P) / log(1 + r/n)

If we substitute the given values:

t = log(750,000/500,000) / log(1 + 14/(2*100))

t is about 3.3 years. Therefore Amanda should withdraw after 3.3 years.

Step-by-step explanation:

pa brainliest po