Andy estimated that he would need 71 feet of lumber for a tree house project. he later found that the actual amount of lumber needed was 60 feet. what was the percent error of andy's estimation?
18.33%
15.49%
11%
84.51%

If a =6, what is the value of 2a(3b + 5c)?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212