if 3x-y=12. What is the value of \(\dfrac{8^x}{2^y}\)

For all real numbers b and c such that the product of c and b is 3, which one of the following expressions represent the sum of c and 3 in term of b 

A)b+3

B)3b+3

C)3(b+3)

D)\(\dfrac{b+3}{3}\)

E)\(\dfrac{b}{3}\)+3

1)a,b,c are triangle edge their perimeter is 3.Prove 

2b+\(\dfrac{32}{\left(a-b\right)\left(2b+3\right)^2}\)\(\ge\)5