00:01
Hi, now we are going to label the each function now from the given graph we have in function a when the value of x is equal to 0 the value of y is also equal to 0 so when we didn't sell anything, so we don't have a revenue therefore here function a represents the total revenue function and then in function b.
00:45
We have when the value of x is equal to 0 the value of y is 2000 so this is the fixed cost after that the revenue is sorry, the cost is increasing according to the value of x.
00:59
So here the function b represents the total cost function and next in part b.
01:15
We are going to determine the fixed cost now here the function b represent the total cost function so we have to put x is equal to 0 in function b then we get the value of y is $2 ,000 therefore the fixed cost is $2 ,000 and next in part c.
01:48
We are going to find the break even point so we have to find the intersecting point of the two function so from the given graph we get the intersecting point of the function a and b is 400 comma 3000 so this is our break even point and next we are going to determine the number of units sold to break even that is the value of x in the break even and that will be 400 units and next in part d.
02:28
We are going to find the marginal cost and marginal revenue now in function a i take two points the points are 0 comma 0 and 400 comma 3000 so first we have to find the slope from these two points.
02:43
So the slope m will be 3000 divided by 400 that will become 7 .5...