Susan took out a personal loan for $3,500 at an interest rate of 13% compounding monthly. She made arrangements to pay the loan off in 3 years. What will her monthly payment be? A) $99.34
B) $105.32
C) $117.93 THIS ONE
D) $156.60
Explain it please.

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%