Thomas is training for a marathon. He runs the first 3 miles of his practice run at a constant speed. which function could be used to represented the distance Thomas runs, d ,in terms of his speed, s?
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a. d(s)=3s
b. d(s)= 3/s
c. s(d)=3d
d. s(d)=3s
+259 Lets look at the first one:
It says the distance is equal to 3 times s. This means that the distance would expend proportional which is correct since the speed is constant.
2nd one:
This says that the distance is equal to 3 divided by the speed. This makes no sense, since the distance gets bigger and not lower.
3rd one:
the speed is equal to the distance times 3. This function is also a proportional function, but the speed is supposed to be constant so this doesnt fit the question.
4rd one:
speed is equal to 3 times the speed. Well u got a function with s(d) while in the function itself theres no d given. The function itself is repetitive.
