A painter took 15 hours to paint 12 rooms in a building. Choose all true statements about the painter's rate of speed

Write the equation in logarithmic form 8^x=64

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.

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?