Urgent! answer these questions and show work! 50 points!

(a)

60 thousand dollars

(b)

1 thousand MP3 players

(c)

0 or 2000 MP3 players

Step-by-step explanation:

(a)

We start by finding the derivative, which is -120x+120. We can find this by using the power rule, which has 60x² turn into 2*60*x, and 120x turn into 1*120*1. Finding the stationary points, or when the derivative is 0/when the graph goes from up to down or vice versa, we solve for -120x+120=0, so 120=120x and x=1. Plugging this in, P is 60, and is clearly not a minimum as r(0) = 0, where r is the function. Thus, as this is a local maximum and there is only 1 stationary point, this is the maximum. (a) is then 60.

(b)

This is 1, which has already been established.

(c)

For this, we must find when the profit, or 120x-60x^2, equals 0. We then have 120x-60x^2=0. Dividing both sides by 60x, we get 2-x=0, and x=2. However, this is not the only answer, as there is at least one x in both 120x and 60x^2. Therefore, we must check for 0, and since r(0) is 0, that is a correct answer as well.

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)  

can i see the following ?

step-by-step explanation: