5) If 5 times a number is increased by 4, the result is at least 19. Find the least possible number that satisfies these conditions.

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd