6. A hot air balloon starts from the ground. It rises at a rate of 5 m / min. After 17 minutes, it descends at a rate of 3 m / min for 6 minutes. Then it rises at a rate of 11 m / min. How far from
the ground is the hot air balloon after 1 hour? Show your work.

Write the expression 7x^3-28xy^2 as the product of 3 factors

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?

Plz hurry evaluate the expression a+b where a=8 and b=19