Let f(x) = -5 - 3x2 and g(x) = -3 - 5x2 - x3. then f(x) - g(x) equals

Which of these choices show a pair of equivalent expressions?

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?