Dont you just love when people leave you on read?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

What expression is equivalent to 42x-56y

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?