Explain how you can use doubles when multiplying with 4 to find 4×8

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

Chanelle deposits $7,500 into the bank. she does not withdraw or deposit money for 6 years. she earns 6% interest during that time. what will the balance be when she is finally able to withdraw her money?

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?