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

Question

Quizplus · Accepted Answer

To solve for $r$, start with the given equation $A = P(1 + rt)$. Subtract $P$ from both sides to get $A - P = P(rt)$. Then, divide both sides by $Pt$ to isolate $r$, resulting in $r = \frac{A - P}{Pt}$.

Solve the Equation for the Specified Variable r=P−APt\mathrm { r } = \frac { \mathrm { P } - \mathrm { A } } { \mathrm { Pt } }r=PtP−A​

Solve the Equation for the Specified Variable $\mathrm { r } = \frac { \mathrm { P } - \mathrm { A } } { \mathrm { Pt } }$