Final answer:
The expression that represents the exponent in the formula A = P(1 + ?) is n * t * r.
Step-by-step explanation:
The expression that represents the exponent in the formula A = P(1 + ?) is option (d) n * t * r.
Let's break down the formula to understand each component:
A represents the amount of the investment after t years.
P represents the initial investment.
n represents the number of times the investment is compounded per year.
r represents the interest rate.
So, when you multiply n, t, and r together, you get the exponent that is used in the formula.