If 8^2x=32 then what does x equal?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?

Y+ 2/y is it a polynomial in one variable or not? and if so, why?