72% of 350 friends

its a percent math thingy. HELP PLS!

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

With alll of except for the 2 that i did already

Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt