John copeland sells tennis equipment. he is guaranteed a minimum salary of $1,500 a month plus 5.75% of his total sales. what is the correct set up to find john's total sales, s, for a month in which his gross pay was $2,075?
a. $2,075 = $1,500 + (.0575*s)
b. $2,075 - $1,500 = s
c. $2,075 = $1,500 + (5.75*s)
d. $2,075 - s = $1,500