use the simple interest formula to find the ending balance. $5000 at 5% for 3.5 years.

A = $ 5,875.00

Equation:
A = P(1 + rt)
Calculation:
First, converting R percent to r a decimal
r = R/100 = 5%/100 = 0.05 per year,
then, solving our equation

A = 5000(1 + (0.05 × 3.5)) = 5875 
A = $ 5,875.00

The total amount accrued, principal plus interest,
from simple interest on a principal of $ 5,000.00
at a rate of 5% per year
for 3.5 years is $ 5,875.00.

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2