20. The height of a triangle is 2 cm less than the base. If the area of the triangle is 40 cm2. Give the base a the height of the triangle respectively. a) 8 cm, 6 cm b) 10 cm, 8 cm c) 8 cm, 5 cm d) 12cm, 10 cm 21. What is the length of one side of a square if its area is j6 - 12j3 + 36? a) 3 - 6)units b) (3 + 6 units c) - 6) units d) ( - 6) units * 22. The distance covered by a tricycle is given by the expression 4x2 + 19x + 12. The time taken by th tricycle to cover this distance is given by the expression x +4. Find the speed of the tricycle. a) (2x - 3) b) (4x + 3) c) (2x + 3) d)(4x - 3) 23. A vendor earns (16m2 -- 2m - 3) pesos for selling (8m + 3) kilograms of mango. How much does each kilogram of mango cost? a. (2m + 1) pesos b.(4m + 3) pesos c. (2m - 1) pesos d. (4m + 1) pesos 24. Linda bought facemasks worth (24x + 40y) pesos. If he buys (3x + 5y) pieces of facemasks, how much is the cost of each? a) 8 pesos b) 4 pesos 4 c) 6 pesos d)10 pesos 25. The area of Aling Nena's rectangular floor is x2 + 13x + 42 ft. If the measure of its width is (x - what is the perimeter of the floor in terms of x. a) (4x + 26) ft b) (x + 7) ft c)(2x +13) ft d) (2x + 14) ft​