2 inches of snow in 8 hours

Please help me make this into Unit Rate

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5

If the average of x,y and z is 15 what is their sum