Question

The equation A = p + prt is used to find the accumulated amount, A, of an investment with principal, P, a certain interest rate, r, and over time, t. What is the value for r, after the equation is rearranged?

r equals start fraction cap a plus p over p t end fraction
r equals start fraction cap a minus p over p t end fraction
r equals start fraction cap a minus one over t end fraction
r = A − p − pt

Answer 1

The answer is B, r = "A - p / pt."

Explanation:

I just took the test and got a 100% with this answer. I hope this helps!

Answer 2

A=p+prt
minus p both sides
A-p=prt
divide both sides by pt

`(A-p)/(pt)=r`
dunno what a fraction cap is
I would guess it is the 2nd one