According to a government study among adults in the 25- to 34-year age group, the mean amount spent per year on reading and entertainment is $2,045. Assume that the distribution of the amounts spent follows the normal distribution with a standard deviation of $515. (Round your z-score computation to 2 decimal places and final answers to 2 decimal places.)

a. What percent of the adults spend more than $2,650 per year on reading and entertainment?

b. What percent spend between $2,650 and $3,250 per year on reading and entertainment?

c. What percent spend less than $1,200 per year on reading and entertainment?