Find the coordinates of the midpoint of ab with endpoints a(-3,-4)and b(5,5)

Plz which expression is equivalent to the expression below?

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2