How do I do this? I just started and I am so confused! >_

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

Combine like terms to make a simpler expression 3z+z

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?