Solve the formula for the specified variable.
-$P = \frac { A } { 1 + r t } \quad \text { for } r$
A) $r = \frac { A - P } { P t }$
B) $r = P - A t$
C) $r = \frac { P - 1 } { A t }$
D) $\mathrm { r } = \frac { \mathrm { P } - \mathrm { A } } { 1 + \mathrm { t } }$

Question

Quizplus · Accepted Answer

To solve for $r$, first multiply both sides by $1 + rt$ to get rid of the denominator, resulting in $P(1 + rt) = A$. Then, isolate $rt$ by subtracting $P$ from both sides, giving $Prt = A - P$. Finally, divide by $Pt$ to solve for $r$, resulting in $r = \frac { A - P } { P t }$.

Solve the Formula for the Specified Variable P=A1+rt for rP = \frac { A } { 1 + r t } \quad \text { for } rP=1+rtA​ for r

Solve the Formula for the Specified Variable $P = \frac { A } { 1 + r t } \quad \text { for } r$