3. Write & solve an equation to find the value of x, then find the exact degree measure of the exterior angle.
2x+12
3x-7

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

2x minus y equals 6, x plus y equals negative 3