C2.2 Evaluate algebraic expressions that involve rational numbers.
Activity 1: Evaluation of Algebraic Expressions
Evaluate the following algebraic expressions:
(a) 3c + 4d – 2 if c = \(\frac{1}{3}\) and d = \(\frac{3}{2}\)
(b) 3.5m + 5n + 4 if m = -1.6 and n = 5.7
Activity 2: Monthly Income
The algebraic expression for Jullian's monthly income is 3g + 57.25. Estimate his income if the value of g this month is $24.25.
Activity 3: Juice Sales
The algebraic expression representing the daily sales of fruit and vegetable juices is 4x + 6y, based on the sale price of each.
Use the algebraic expression to calculate the total sales if today 27 fruit juices and 12 vegetable juices were sold.