Choose the product.

-5p 3(4p 2 + 3p - 1)

-20 p 5 + 3 p - 1
-20 p 5 - 15 p 4 + 5 p 3
20 p 5 + 15 p 4 - 5 p 3
-20 p 6 - 15 p 4 - 5 p 3

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Precalculus question, image attached.

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.