Need asap: abbi invested $1,000 in a certificate of deposit with a simple interest rate of 4%. find the interest earned in 8 years. then find the total of principal plus interest.

Therefore, Abby earned $320 in interest.

Abby earned a total amount of $1,320.

Step-by-step explanation:

We have been given that Abbi invested $1,000 in a certificate of deposit with a simple interest rate of 4%.

To find the amount of interest, we will use simple interest formula.

, where,

I = Amount of interest,

P = Principal amount,

r = Annual interest rate in decimal form,

t = Time in years.

Let us convert our given interest rate in decimal form.

Therefore, Abby earned $320 in interest.

To find the total of principal plus interest, we will add $320 to $1000 as:

Therefore, Abby earned a total amount of $1,320.

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

answer: 0.26

i used the calculator on google