Answer:
I think it 2 solution to the problem you can add or multiple
If Y varies 'directly'' as X then when X is tripled then so is Y
Your answer would be 5.7 or 6 your welcome :)
Its biased because Max wants to find out the exercise habits of LOCAL children, but he is specifically going to an area where kids are mostly likely fit die to the fact that they are exiting a sporting good store, so yeah, Biased. Hope it helps.
