Answer:
Does the answer help you?
I don't think you use a fraction. You multiply .6666 by 72 which equals 47.9952 or rounded 48. :)
the maximum height is the y-value of the vertex.
h(x) = -2x² + 20x + 48
<em> a=-2, b=20, c=48</em>

h(5) = -2(5)² + 20(5) + 48
= -50 + 100 + 48
= 50 + 48
= 98
Answer: 98 meters
I think is 1863 m because if you use the formula for area
The answer is B . because when u add them u will get 14400000 which is 1.44*10^7sq kilometers. did this help you?