Answer:
24.5 is the answer. It is not rounded.
Step-by-step explanation:
You have to work backwards on this problem. 153.86 divided by 3.14 = 49. But 49 is only your diameter, so you have to divide by 2 to get radius. 49/2 = 24.5.
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The trip back the boat will travel only 30 miles because the trip doubled the hrs.
If i'm correct. it should be $10,022.40
Y=18
x=6
following since they vary directly it would be in
y=mx form
18=m(6)
6*3=18
your answer is y=3x