What is the surface area of a rectangular prism with a length of 5 ft, width of 2ft and height of 25 ft

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

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.

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities