Clean Machine is Newton's premier house cleaning service. Last year, Clean Machine used 8,870 gallons of soap to clean its customers' homes. This year, the company used 4,435 gallons. What is the percent of decrease in the amount of soap per year?

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2