1) evaluate the expression 2x-3y+3z if x=-2,y=5, and z= -1
2) solve for h: a=1/2h(b1+b2)
3) find the sum of the two mixed# 2 3/4+ 7 2/3
show work for all of them

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Who long does it take to drive 150 miles at 45 miles per hour

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.