Which expression represents the average of three test scores? X+Y+Z
3(x+y+z)
x+y+Z
*
xyz
3

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Find the equation of a line whose slope is 2/5 and y- intercept is 2.write your answer in the form 1) ax+by+c=02) x/a+y/b=1

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29