Find the cost to the nearest cent 24 and 15% tip

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a. about 4 b. about 8 c. about 40 d. about 21

When y’all answer can y’all explain too !