"Find the sum of 8x and 4, then divide all of that by 3x.

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).

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?