What are the like terms in the following expression?
9x + 7 + 4x

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)