The function C(x)= -2x^2+38x+40 models the sales, in hundreds of millions of dollars, of compact discs for years since 1990. Part A: Rewrite the function to reveal when sales of compact discs are $0

Part B: What are the zeros of the function?

Part C: Use the context to interpret the zeros.

Please show the steps it would help me out a lot

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

41*67/2=1373.5

step-by-step explanation:

i just used a calculator

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.