Answer:
43.25-7-(t*1.15)
Step-by-step explanation:
because oBaMa
We are asked to express r in terms of A, P, and t.
We first divide both sides of the equation by t, which gives us

,
then, dividing both sides by P, we have

.
Swap the sides:
Finally subtracting 1 from both sides gives us

.
I've attached a photo of the solution below. Hope it helps!