What is −8 − 5n = 64 + 3n ?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Stefanie is painting her bedroom. she can paint 2 1/3 square feet in 4/5 of an hour. how many square feet can she paint in one hour?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6