Profit is the difference between revenue and cost. the revenue, in dollars, of a company that makes skateboards can be modeled by the polynomial 2x^3 + 30x -130. the cost, in dollars of producing the skateboards can be modeled by 2x^3-3x-520. the variable x represents the number of skateboards sold. what expression represents the profit?

a: 27x-650
b: 27x+390
c: 33x-650
d: 33x+390

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

An ant travels at a constant rate of 30cm every 2 minutes. at what speed does the ant travel per minute

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?