Scores on an exam are distributed normally with a mean of 72.3 and a standard deviation of 8.9. If 200 students take the exam, how many students would be expected to score higher that 72.3? Group of answer choices

100

150

72.3

200

Omg that is a big question and weird words and i’m only 5

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.