The total surface area of a cylinder is given by the formula where r is the radius of the cylinder and h is the height. What is the total surface area of a cylinder with a radius of (4x + 1) in and a height of (2x + 1)in? Write your answer as a polynomial in standard form. Do not enter units.​

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

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.

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)