The scores on a psychology exam were normally distributed with a mean of 53 and a standard deviation of 5. what is the standard score for an exam score of 44?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Jon’s weight loss for each week of the month is 5 lbs., 2.5 lbs., and 2.5 lbs. he gained 3.5 lbs. the last week. if jon originally weighed 198 lbs., how much does he weigh now?