Carmen$$s Beauty Salon has estimated monthly financing requirements for the next six months as follows:

January $ $9,400$ April $ $9,400$

February $3,400$ May $10,400$

March $4,400$ June $5,400$

Short$-$term financing will be utilized for the next six months. Projected annual interest rates are:

January $8\mathrm{.}0\%$ April $15\mathrm{.}0\%$

February $9\mathrm{.}0\%$ May $12\mathrm{.}0\%$

March $12\mathrm{.}0\%$ June $12\mathrm{.}0\%$

a$.$ Compute total dollar interest payments for the six months.

b$-1.$ Compute the total dollar interest payments if long$-$term financing at $12$ percent had been utilized throughout the six months?

Note: Round your monthly interest rate to $2$ decimal places when expressed as a percent. Round your interest payments to the nearest whole cent.