The time it takes mike to ride his bicycle varies directly with the number of miles. mike's data is shown in the table. if x = time, and y = the number of miles, which equation models mike's direct variation?
a) y = 12x
b) y = 1.2x
c) y = 12 + x
d) y = 1.2 + x

50 poits plz

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively

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