1. Harold bought a total of 40 items at an online store. He purchased ebooks for $7.50 each and mp3s for $0.90 each. If he spent a total of $181.20 at the online store, how many ebooks did he purchase and how many mp3s did he purchase?​

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.