What is the length of AC?

225/100 of last years cost. write each fraction as a decimal and as a percent

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?