Sean earned $31,000 last year. If the first $25,000 is taxed at 9% and income above that is taxed at 15%, how much does Sean owe in tax?

What is another way to express 36 +32

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)