Write the sentence as an equation.

129 equals g subtracted from 21

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Find the multiplicative inverse of 8-12i

We just started the introduction into circles and i have no idea how to do this.