Whats x²-x-6

multiple choice:
A= x-1
B=x-2
C=x-3
D=x-6

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Me! last question, and i'm stuck! write the algebraic expression that models the word phrase. the product of 2 divided by the number h and 8 more than the number k

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie