Question

HELP

Answer 1

Part A: The x intercepts represent no profit made by the company. The maximum value of the graph represents maximum profit made by the company ($120). The interval from x = -1 to x = 3 is where the function is increasing. The interval from x = 3 to x = 7 is where the function is decreasing. Where the function is increasing the profit increase to its maximum $120 with 3 dollars per pen, and where the function is decreasing is where the profit decreases to 0 with 6 dollars per pen.
Part B: This is easy Domain is always X, and Range is always Y. Find were the profit equals 60 on that graph and find the X coordinate. (should be 1)
Part C: Average rate of change is the rate at which a function is decreasing or increasing ie Rise/Run or Slope find the slope of the interval x = 3 to x = 5. (should be -30). This rate represents the rate of profit that is falling by an increase of price per pen.