Kiran surveyed a random sample of students in her school district, and she found these statistics: P(rides bike to school) = 0.14
P(has crossing guard) = 0.48
P(rides bike and crossing guard) = 0.12
Find the probability that a student rides a bike to school, given that the student's school has a crossing guard.
P (rides bike crossing guard)

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.

What are the domain and range of the function f(x)=2^x+1

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3