Cuanto triángulos tiene un pentagono

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°