Page 135 - TB_5B

Activity 1 Simple Algebraic Expressions

There is a park in Jessica’s neighborhood.
It has a sprinkler that sprays 40 L of water per
minute. Let a the time (min.) that the
sprinkler sprays water.
Write an algebraic expression to represent the
amount of water sprayed by the sprinkler.

Find the amount of water sprayed by the sprinkler in 2 and 3 minutes.
2 40 80 (L), 3 40 120 (L)

So, the amount of water sprayed can be found using the expression below.
(minutes using sprinkler) 40

Use a to write the expression.

1 . Write an algebraic expression for each situation.

a. Ricky is three years younger than his brother. Let z his brother’s age.

b. Thomas paid for four roses. Let b the price of a rose.

c. The area of a rectangular-shaped rug. Let x the width, and let y the
length.

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