B. Choose the correct expression. Blacken the letter of the correct answer. 11. The sum of eleven and nineteen. a. 11 x 19 b. 11 of 19 c. 19-11 12. Eight decrease by five. 6.5-8 C. 8 x 5 13. Twelve plus thirty-six a. 12 x 30 b. 36 -12 C. 12 + 36 14. Five less than seven. b. 7-5 C. 5-7 d. 5/7 15. Four times the sum of two and five. a. 4x(2+5) b. 4x(5-2) c. 4+ ( 5x2 d. 4x(2-5) C. Choose inside the box the correct letter for the algebraic symbols of the following. a. 12 b. 12-X C. 2X + 10 d.X-3Y e. 3 (X+6) 16. Twice a number x added to 10. 17. x minus tricey 13. Twelve minus a number 19. Thrice the sum of a numbers and six 20. Twelve more than a number