What is the constant in this expression: 3x + 9y +12

Answer this question only if you know the 30 points and

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank