Profit is the difference between revenue and cost. the revenue, in dollars, of a company that manufactures cell phones can be modeled by the polynomial 2x2 + 55x + 10. the cost, in dollars, of producing the cell phones can be modeled by 2x2 – 15x – 40. the variable x represents the number of cell phones soldprofit is the difference between revenue and cost. the revenue, in dollars, of a company that manufactures cell phones can be modeled by the polynomial 2x2 + 55x + 10. the cost, in dollars, of producing the cell phones can be modeled by 2x2 – 15x – 40. the variable x represents the number of cell phones sold. what expression represents the profit, and what is the profit if 240 cell phones are sold

Step-by-step explanation:

Revenue function (R(x)) is given as  

Cost function (C(x)) is given as  

To find the expression for profit, we use Revenue - Cost = Profit

We simply substitute the functions given above into this word equation.

Let's call Profit as P(x).

The expression for Profit function is  70x+50

Since x represents the number of phones sold, and we want to find the PROFIT when number of phones sold is 240, we plug in 240 into x in the profit function just found above. Thus:

Thus the profit if 240 phones are sold is $16,850

351°f

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.