At a community barbecue, Mrs. Meyer and Mr. Montgomery are buying dinner for their families. Mrs. Meyer purchases 2 hot dog meals and 3 hamburger meals, paying a total of $40. Mr. Montgomery buys 1 hot dog meal and 1 hamburger meal, spending $15 in all. How much does one hot dog meal cost?

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.