A hot air balloon has just taken off it rises a height of 90 meters above the ground in 30 seconds it is moving at a constant speed. How fast is the hot air balloon rising?

The table shows values for functions f(x) and g(x) . x f(x)=3x g(x)=2x+1 −2 19 −3 −1 13 −1 0 1 1 1 3 3 2 9 5 what is the solution to f(x)=g(x) ? select each correct answer.

Anyone know? will mark brainliest if correct!

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals