Maria Torres Barros $8000 at 8% add on rate for four years. What is the interest? What is the monthly payment?

The interest is $640, meaning you has to pay back $8640. The monthly payment is $180.
Explanation: 8000•.08=640III640+8000=8640
12 Months in a year, multiply by 4 to get 48. 8640/48=180.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.