Sonya needs to purchase a new refrigerator. Model A costs $950 to purchase and $32 in electricity per year to operate. Model B costs $1275 to purchase but costs only $22 in electricity per year to...

Sonya needs to purchase a new refrigerator. Model A costs $950 to purchase and $32 in electricity per year to operate. Model B costs $1275 to purchase but costs only $22 in electricity per year to operate. After how many years will the total cost of both units be equal? If she expects to keep the refrigerator for about 15 years, which model is the better buy?