How to solve. i already figured out the answer through calculator graphing but the homework required all work to be shown. how do you actually solve this?

Astudent simplified a rational expression as shown.

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Agroup of randomly selected members of the foodies food club were asked to pick their favorite type of food. the bar graph below shows the results of the survey. there are 244 members in the foodies.