2 REPRESENTING QUANTITIES IN REAL-LIFE SITUATION

Translate this into an algebraic expression: Carlo bought a pencil at ₱8.50 and 5 pieces of colored paper for his project.

• 5 x ₱8.50

• n + ₱8.50 + 5

• ₱8.50 + 5

• 5n + ₱8.50

Translate this into an algebraic equation: Trixie is 5 years older than Shane. The sum of their ages is 21 years.

• n + n + 5 = 21

• n + 5 = 21

• 21 + 5 = n

• n + n = 21

Identify the variable in this expression: 6b + 9

• 6

• b

• +

• 9

Translate this into an algebraic expression: Mico’s age 3 years ago

• n – 3

• 3 + n

• 3n

•  $\frac{3}{n}$  

Translate this into an algebraic expression: 2 packs of biscuits and ₱12.00 juice

• 2n + 12

• 2 + 12n

• 2 + 12

• 2n - 12

Translate this into an algebraic equation: Alfred is 15 years old 4 years from now. How old is Alfred now?

• n + 4 = 15

• 15 - n = 4

• 4n = 15

• $\frac{n}{4}$ = 15

Ybone is 3 years younger than her sister. The sum of their ages is 25 years.

• n + 3 = 25

• 3n = 25

• n + n – 3 = 25

• n + 3 – n = 25

Faith bought 2 notebooks with the same price and a ballpen which costs ₱12.00.

• 2n + 12

• 2n – 12

• 12n – 2

• 12n + 2

Mario weighs s kilograms. Express algebraically his weight after he gained 2.5 kilograms.

• s – 2

• s + 2

• s - 2.5

• s + 2.5

Remia is g centimeters tall. Mary’s height is 4 less than thrice the height of Remia. How tall is Mary algebraically?

• 4g – 3

• 3g – 4

• 3g + 2

• 4g + 3