Solve these equations.

|x-7|=x-7

pls help!

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

See attachment below and find the equivalent of tan(∠qsr)