Wei is writing out expressions from verbal descriptions. He writes "multiply two by the difference of n and three" as 2(n - 3) ) He writes "subtract one from the sum of n and six" as 1 - (n + 6) . He writes "add five to the product of four and n"as 5 + 4x n Complete the statements . Wei made a mistake when writing as an expression. The correct way he should have written the expression is

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Pls , the question is in the picture!

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.