Answer:
Step-by-step explanation: i just took the test and it says the answer is y=2/3x-9
2) Exact
3) Exact
4) Exact
5) Approximation
Step-by-step explanation:
Since we are dealing with a radical then x - 5 ≥ 0, for real values
x = 4 is less than 5 , hence is not in the domain
7height
8 Km
16 x 50000 = 800,000 cm
800,000 cm = 8,000 m
8,000 m = 8 km
I hope this helps, if not sorry