A hot air balloon is released and it rises at a speed of 15 mph. A weather pattern introduces a wind headed west at 20 mph. The hot air balloon is now redirected. What was the new speed of the balloon?

I'm terrible at math any here is appreciated.

When only separate discreet points are graphed it is called?

Afunction, f(x), represents the height of a plant x months after being planted. students measure and record the height on a monthly basis. select the appropriate domain for this situation. a. the set of all positive real numbers b. the set of all integers oc. the set of all positive integers od. the set of all real numbers reset next