Name: SAT Math Help & School Math Mastery
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#38558

algebra

equations

medium

75 sec

The formula for the future value of an investment compounded annually is $A = P (1 + r t)$ , where $A$ is the future value, $P$ is the principal, $r$ is the annual interest rate, and $t$ is the time in years. Which equation correctly expresses $t$ in terms of $A$ , $P$ , and $r$ ?

A.

$t = \frac{A - P}{P r}$

B.

$t = \frac{A}{P r} - 1$

C.

$t = A - P - P r$

D.

$t = \frac{A - 1}{P r}$