Your bill at a restaurant was for $36. You want to leave a 15 % tip. What would the tip amount be? $5.40
$6.20
$4.17
$2.40

Help please

Camille is preparing for her english test by typing up the notes she recorded in the margins of her 98-page workbook. she already started typing her notes, and got through the first 14 pages. if camille types for x hours at a rate of 21 pages per hour, which equation represents the number of pages she has typed, and how many hours will it take to complete the task?