Andy estimated that he would need 78 ft of a lumber for a tree house project. he later found that the actual amount of lumber needed was 67 ft. what was the percent error of andy's estimation
a. 16.42%
b. 11℅
c. 14.10℅
d. 85.90℅

The manager at gabriela's furniture store is trying to figure out how much to charge for a book shelf that just arrived. the book shelf was bought at a wholesale price of $ 1 4 7 . 0 0 $147.00, and gabriela's furniture store marks up all furniture by 6 0 % 60%. at what price should the manager sell the book shelf?