The matrix below represents a system of equations, 2
- 1
-20
- 2
--
5
3
- 2
which matrix represents R24 R3 - 1337
2
-3 -20
1-2
B
6
O
1
-11
2
-1
--3---20
- 1
3
--2
4
18

I’m stuck on this i don’t understand.

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.