Please show your work.

(3a + 15/-4a - 16) x ( 7a^2 + 63a + 140/(a +5)^2)

Answer these questions showing your work plz

Which statement describes surface features called maria on the moon

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?