Slope is 2 because it goes up by two and over by one
Remember the distance formula




Beaufort force 9 severe gale. After 8-10 hours of constant force the average height would be about 7 meters.
Rational number, because the Square root of 400 is 20, since 20 x itself is 400. Hope this helps!
Put the 2 as an exponent of 12: log3(12)^2=log3(144)
log3(144)-log3(16)=log(144/16)=log3(9)=2
logx^2+log(x+1)^(1/2)-logy^3
=2logx+(1/2)log(x+1)-3logy
refer to another of your questions that I just answered.