exam Maths Puzzle Numerical Ability

Please help me!!!!
My problem says to graph each quadratic equation and state the vertex and intercepts. The equation is y=x^2+4x. I have to have at least 4 intercepts. Thank you so much!!

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exam Other Question

-x<7 or 3x+1<-20
My answer
x>-7 or x<-7

(-7,+ INF) or (-INF,-7)

My question is this allowed or is it no solution
what are the greatest common factor (GCF) for the numbers 36 and 84