Lemma
MediumExponentials & logarithms
OpenStax, Algebra and Trigonometry 2e §6.1 Exponential Functions · Exercise 47 · Algebra · Exponentials & logarithms

Exponential Functions · Exercise 47

Use the compound interest formula,

Use the formula found in the previous exercise to calculate the interest rate for an account that was compounded monthly, had an initial deposit of $5,500, and was worth $38,455 after 30 years.

This exercise builds on another exercise in its source book, which isn't shown here.

~8 minWritten answer · compare with the solution

OpenStax, Algebra and Trigonometry 2e · §6.1 Exponential Functions · Exercise 47

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.