Find the rate of change of total revenue, cost, and profit with respect to time. Assume that R(x) and C(x) are in dollars. R(x)equals50 x minus 0.5 x squared, C(x)equals2 x plus 5, when xequals40 and dx divided by dtequals20 units per day The rate of change of total revenue is $ nothing per day.

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Which number completes the system of linear inequalities represented by the graph? y > 2x – 2 and x + 4y >

How do you solve this step by step?