y(x)=0.3x
since he travels 0.3 kilometers for each minute (x)
then y as a function of x is 0.3×the number of minutes(x)
Step-by-step explanation:

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Answer:
good luck
Step-by-step explanation:
Order of operations.
Parentheses: there are none
Exponents: also none
Multiplication: also none
Division: yep. 45 / 3 = 15
Addition: none
Subtraction: Yes
The absolute value of -5 is 5. (Absolute values are always positive or 0)
5-15= -10
C because 9 + 5 is not 15 and because 13 + 5 is not 20