Answer:
i=7
Step-by-step explanation:
The first is not a polynomial as one term is dividing.
Answer:
26.25 gallons
Step-by-step explanation:

21000 = 800x
x = 26.25 gallons
Answer:
164m (to 3 s.f.)
Step-by-step explanation:
Please see the attached picture for the full solution.
In this item, I assume that the variable "e" here stands for the Euler number which is equal to 2.718. Raising this number to the exponent -2.8 will give us an answer of,
y = e^-2.8 = (2.718)^-2.8 = 0.0608
Therefore, the value of y is approximately 0.1.