There are 90 students, 10 leave. what percentage stayed?

wouldd the answer be 80%?

The highest point on earth is the peak of mount everest if you climb to the top you would be approximately 29,035 feet above sea level at remembering that amount is 5280 feet percentage of the height of the mountain would you have to climb to reach a point 2 miles above sea level

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

Ineed to know the answer right now! !