Desmos Graphing Calculator

CalcReferenceCopy

Math·Advanced Math·Nonlinear functions

hard

An account was opened with an initial balance of $700.00. Over the first 4 months, the balance increased by 0.6%. After that, the balance increases by 0.1% every 2 months.

Which of the following equations could represent the account balance $B(x)$, in dollars, $x$ months after the account was opened, where $x\ge 4$?

A

$B(x)=704.20(1.001{)}^{x-4}$

B

$B(x)=700.00(1.001{)}^{\frac{x-4}{2}}$

C

$B(x)=704.20(1.001{)}^{\frac{x-4}{2}}$

D

$B(x)=700.00(1.001{)}^{2(x-4)}$