Activity 3 Direction. Write the Expression or Equation algebraically. 1. A number plus 11 equals 48 2. A number decreased by 9 3. A number cubed is 48 4. A number plus 7 is equal to 33 5. A number decreased by 3 is 27 6. 18 less than a number is 19 7. The product of a number and 5 is 9 8. The difference of a number and nine equals 32 9. A number squared is 11 10. The sum of a number and 12 equals 44