At the end of each quarter, $3,500 is placed in an annuity that earns 8% compounded quarterly. Find the interest earned in 7 years. A. $129,679.24
B. $32,272.81
C. $31,679.24
D. $31,675.24

Acompany manufactures x units of product a and y units of product b, on two machines, i and ii. it has been determined that the company will realize a profit of $3 on each unit of product a and $4 on each unit of product b. to manufacture a unit of product a requires 7 min on machine i and 5 min on machine ii. to manufacture a unit of product b requires 8 min on mchine i and 5 min on machine ii. there are 175 min available on machine i and 125 min available on machine ii in each work shift. how many units of a product should be produced in each shift to maximize the company's profit p?