Math Problem Easy 10 points!?

Question

An electronics manufacturer can produce and sell "x" radios per week. The total cost "C" (in dollars) for producing "x" radios is

C= 73x + 25,000

and the total revenue "R" (in dollars) is

R= 95x

Find the profit "P" obtained by selling 5000 radios per week.

Can you please show your work, I don't know how to do this problem.

Answer 1

Cost      = 73($5000.00)+25000.00

             = $390,000.00

Revenue = 95($5000.00)

             = $475,000.00

Profit     = Revenue - Cost

            = $475,000.000 - $390,000.00

            = $85,000.00

Answer 2

Profit would be revenue minus cost   P  =  R  -  C

P  =  95x - (73x +25,000)

P  = 95x - 73x - 25,000

P = 22x - 25,000

substitute 5000 for x

P = 22 * 5000 - 25,000

P = 110,000 - 25,000

P = 85,000

Not a bad week, IMO