Pls help it can be a . Number I will mark brainliest to whoever explains how to do it

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8