Answer:
Step-by-step explanation:
Whenever you have exponents raised to another exponent, you multiply the exponents!
1 cm = 20 km
so 3.5 cm would equal : 3.5 * 20 = 70 km <==
Option D: 14 is the right answer
Step-by-step explanation:
In order to find the value of given expression we have to put the given value for f in the expression
Given expression is:

We have to find the value of expression on f=3
So,
putting f=3 in expression

The value of given expression at f=3 is 14
Hence,
Option D: 14 is the right answer
Keywords: expressions, variables
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