Aplane is an undefined term because it? ?

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

What is the prime factorization of 230

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?