Can someone please answer these questions

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921

Acoin is tossed 4 times which of the following represents the probability of the coin landing on heads all 4 times