Which statement is true about liquidity?

1. The more liquid an investment, the less return.

2. The more liquid an investment, the more return.

3. The less liquid the investment, the less return.

4. Both A and B.

Cesar bought 7 items at the candy store. he bought candy bars for $0.50 each and packs of gum for $0.95 each. he spent a total of $6.80. what system represents the solution for the number of candy bars (x) and the number of pack gum (y) purchased?