Find the value of x and y if y-2x=3 and x+y=3

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Mikes car gets an average of 28 mpg. there are 12 gallons of fuel in mikes car when he starts his trip of 140 miles. about how many gallons are left at the end of his trip?

Norder to get a certain shade of blue paint, a mixer must have 5 parts white paint to 3 parts blue. if 4 gallons of paint must be mixed, how many gallons of white paint must be used?