Find P15, which is the IQ score separating the bottom 15% from the top 85%. Assume the scores are normally distributed with a mean of 100 and a standard deviation of 15. 83.3 84.6 82.5 84.0

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.

The answer is 16.66 i'm pretty sure

The answer to the question is 5.27