Question

Need this ASAP please

Answer 1

8 months

Explanation:

`4000=400(((1+.045)^(n)-1 )/(.045))`

Do what's in parentheses.

`4000=400(((1.045^(n)-1) )/(.045))`

Multiply 400 by the numerator.

`4000=((400(1.045^(n))-400 )/(.045))`

Divide both sides by .045.

`180=400(1.045)^(n)-400`

Add 400 to both sides.

`580=400(1.045)^(n)`

Divide both sides by 400.

`(29)/(20) =1.045^(n)`

Convert to logarithmic equation.

`log_(1.045)(29)/(20)=n`

8.441=8 months

Hope this helps!!