The length of chen's office is 15.5 feet and the width is 7.8 feet. Use the formula P=2L+2w to find the perimeter of the office.

p=46.6 feet

Step-by-step explanation:

formula:2l +2w. 2×15.5f. 2×7.8= 46.6 feet

answer: c is correct, a regular pentagon

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.