Idon’t understand those two questions. i’m very confused.

Is the point (0, 8) on the x-axis or y-axis? how do you know?

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?

Rationalize the denominator- 12x/√x-10