Which of the following is not equivalent to x - y + z?

x + z - y
z + x - y
y - x + z
z - y + x

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10