A puppy named sparky started out at 3 pounds and gained 2 pounds every month how heavy was sparky at 4 months old

2x minus y equals 6, x plus y equals negative 3

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.