If the expressions X+2, 3x-8, 4x+2 represent the first three terms of on arithmetic Sequence, then determine the numerical value of the 18th term.

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

What expression is equivalent to 1/2(2+3x-6)