OpenStax, Prealgebra 2e §9.7 Solve a Formula for a Specific Variable · Review Exercise 153 · Algebra · Algebra word problems

Solve a Formula for a Specific Variable · Review Exercise 153

Use the formula $I = P r t .$

Solve for the principal, $P,$ for:

ⓐ $I = \$ \text{720} $,$ r = \text{4}\% $,$ t = 3 \text{years}$
ⓑ in general

~8 minWritten answer · compare with the solution

OpenStax, Prealgebra 2e · §9.7 Solve a Formula for a Specific Variable · Review Exercise 153

Stuck? A gentle nudge

No hints for this one.

Something off?

Workspace

Your working

Check your full solution

Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.