Draw a picture to support your work and how many yards did the grasshopper travel after hopping twice

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?