You put $800 into an investment at 7% for three years. What will the balance be at the end of three years?

$980.03

Step-by-step explanation:

$800 x 0.07 = $56

($800 + $56) x 0.07 = $59.92

($856 + $59.92) x 0.07 = $64.11

$856 + $59.92 + $64.11 = $980.03

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

the answer is  

a.

4,624π mm2

step-by-step explanation: