Anumber d is less than or equal to 2 and greater than or equal to negative 2

-2 ≤ D ≤ 2

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of