Question 1093732
<br>One of the given answer choices is correct.  I have no idea how you got your answer.<br>
The value A of an investment like this, with a periodic contribution of P, a periodic interest rate of i, for n periods, is given by the formula<br>
{{{A = (P((1+i)^n-1))/i}}}<br>
The value A you want is 400000; the periodic contribution P is 350; the periodic interest rate i, since interest is compounded weekly (52 times a year) is .085/52.<br>
Since the unknown, the number of periods n, is an exponent, solving the problem will involve logarithms.  And remember that the value of n you get will be the number of weeks; you will need to convert that to years to see which answer choice is correct.