Iam so confused by this question! someone explain step by step! i'm not even sure what it is asking? 17v^2+12v+3(8v-5) maybe asking me to simplify?

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

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