Answer:
9(x + 19)
Step-by-step explanation:
Product is a multiplication key word where you'll usually always put parenthesis when multiplying, and where the keyword sum comes you'd add x and 12 for your equation :)
Take notes during class, and just find your own unique way of studying. If you like to sing, or write, then make a poem, rap, or song about the material you need to study. That's just something.
Hope I helped!
Answer:
A and b
Step-by-step explanation: Because ....
Since two people take both courses, we can subtract two from 7, 8, and 21, giving us 5, 6, and 19.
Add 5 and 6 together to get 11. Since eleven students are in those two groups, we can answer this. The answer will be 11/19.