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℅

Sketch one cycle if the cosine function y=2cos2theta

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Me i'm timed ! a. -2 to 1 b. -1.5 to 0.5c. 0 to 1d. 0.5 to 1.5