Answer:
cent/km
Step-by-step explanation:
Given


Required
The fuel cost in 
This is calculated using:




Multiply by
to get the cost in cents
cent/km
cent/km
The function
f(x) is even
g(x) is neither even nor odd
h(x) is odd
Steps:
for an even function it holds that f(-x) = f(x):
f(-x) = (-1)^6 x^6 - (-1)^4 x^ 4 = x^6 - x^4 = f(x) => f is even
for an odd h(x) it holds that h(-x) = -h(x):

It is easy to show that g(x) does not match any of the two possibilities above.
Answer:
i need more information about the question... i suggest googleing it
Step-by-step explanation:
10 inches would make him taller than 70, 9 inches would make him exactly 70