Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.7 - Equations - Exercise Set - Page 106: 27



Work Step by Step

Divide $rt$ on both sides of the equation to obtain: $\require{cancel} \dfrac{I}{rt} = \dfrac{Prt}{rt} \\\dfrac{I}{rt} = P \\P=\dfrac{I}{rt}$ This formula gives the principal amount invested. I = interest, r = time, and r = interest rate
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