Plezez help me :c

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.