Which equation represents the total commission (c) a sales associate receives if he sells 15 laptop computers (l)? what is the total commission if the commission for selling each computer is $39.95?

a. l = 15c; $2.66
b. c = 15l; $2.66
c. c = 15l; $599.25
d. l = 15c; $599.25

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.