15. If the height of a ball at time (t) is given by h(t) = -5°+201 +8, at what point in time will
the ball hit the ground?
help please :))

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Which statements are true about additional information for proving that the triangles are congruent check all that apply