can someone please explain the answers to questions 7 and 8? I don't understand...

Question 7 Correct Mark 1.00 out of Consider Alan's choice of he number of visits to Ocean Park. Suppose Alan's total benefit of going to Ocean Park n times in the coming year is a function (in HK$) 0.5 B(n) = 1357 * n 0.5 For example, the total benefit of going to Ocean Park 4 times is 1357 x 4 = 1357 x 2 = 2714 dollars. The general admission cost is HK$345 per entry. Based on this information, how many visits do we expect Alan to make in the coming year? one: Your answer is correct The correct answer is: 4 CorrEt Marks for this submission: 1.00/1.00.