7times negative 3 times negative 2 equals

Which matrix multiplication is possible?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?