You put $400 in an account. the account earns $18 simple interest in 9 months. what is the annual interest rate?

6%

Step-by-step explanation:

Let's start by finding the amount earned per month:

=2

Now let's find the % per month

, or .5%

Now let's multiply by 12 months to get the annual interest rate

or 6%

the dimensions are:

step-by-step explanation:

we want to find the dimensions of a rectangular box with volume of

we factor to obtain;

we rewrite the rightmost factor to obtain;

recall that:

we apply difference of two squares formula to obtain;

hence the dimensions are