Plot the following points on the graph sheet. Verify if they lie on a line (a) A(4,0), B(4,2), C(4,6) D(4, 2.5)
(b) P(1,1), Q(2,2), R(3,3), S(4,4)
(c) K(2,3), L(5,3), M(5,5), N,5)

The salesperson earns a 5% commission on the first $5,000 she has in sales. the salesperson earns a 7.5% commission on the amount of her sales that are greater than $5,000. this month the sales person had $8,000 in sales. what amount of commission, in dollars, did she earn?