There are 168 South American animals in a zoo. That is 35 more than half the number of African animals in the zoo. Enter an equation you could use to find n, the number of African animals in the zoo.

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?