If y varies jointly as x and the square of z and inversely as the cube of w, by what
factor is y increased when z is doubled and w
is divided by 3 if x remains the same?

An arrow is shot vertically upward at a rate of 180ft/s. use the projectile formula h=−16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 420ft. round your answer(s) to the nearest tenth of a second.

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

Define multiplicative inverse. give an example of a number and its multiplicative inverse.