Algebraic expression 4 less the product of 3 and some number

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

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.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers