The mean of four numbers is 70. the mean increases to 80 when a fifth number is added. what is the fifth number?

Which graph represents the equation y =4x

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?

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose