Question

# total revenue and total cost functions for the production and sale of xTV's are given as...

total revenue and total cost functions for the production and sale of xTV's are given as

R(x)=130x−0.7x2

and

C(x)=3950+21x.

(A) Find the value of x where the graph of R(x)R(x) has a horizontal tangent line. xvalues is

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(B) Find the profit function in terms of x.
P(x)=

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(C) Find the value of xx where the graph of P(x) has a horizontal tangent line.
x values =

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(D) List all the xx values of the break-even point(s).
If there are no break-even points, enter 'NONE'.
List of xvalues =

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Given revenue function and cost functions are

(A) The value of x at which R(x) has horizontal tangent line is the value of x at which R'(x)=0

(B) Profit function is

(C)The value of x at which P(x) has horizontal tangent line is the value of x at which P'(x)=0

(D) Break-even point is those at which profit is zero.