Answer:
Domain: t≥0
Range:h(t) ≤ 0.85
Step-by-step explanation:
The domain of a function is all the valid values you can enter into the function. Because time can't be negative the domain is t>0. The range or h(t) is the result, because the object can't go through the ground, it can't be less than zero. 0≤h(t)
0≤-4.87t^2+18.75t
0≤-4.87t+18.75
-18.75≤-4.87t
which is approx.: 0.85≥t or t≤0.85
