recycled cds incorporated, offers a choice of 5 used cds for $26, with each additional cd costing $7. write a cost function for purchasing 5 or more cds. what will the cost of buying 6 cds be ? let x represent the number of cds over 5.

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: