What is the function value of f(-4)-f(1) if f(x)=-x²+8x-11

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

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

Select all expressions that are equivalent to 2(3x + 7y). question 1 options: 6x + 14y 6x + 7y 1(6x + 14y)