Mr. Carr paid $64 interest for a two-year loan at 8% simple interest
How much money did he borrow?

$400

Step-by-step explanation:

The formula for simple interest is i = p * r * t, where r is the annual interest rate as a decimal fraction, p is the principal and t is the time in years.

Here we want to determine what the principal was.  Solving the above equation for p, we get:

           i            $64

p = = = $400

        r * t       (0.08)(2)

c.

step-by-step explanation:

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d