Recycled cds, incorporated, offers a choice of 5 used cds for $24, with each additional cd costing $7. write a cost function for purchasing 5 or more cds. what will the cost of buying 12 cds be? let x represent the number of cds over 5.

560

step-by-step explanation:

giggidy

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13