Will mark brainliest to best answer!!

geometry question!

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

Study results indicate that the mean length of time people spend on a bus in a city is between 21.2 min and 24.5 min what is the study margin of the error?

X=4 / y=100 if x=10 then what is y=?