Question

which expression represents the sum of a number m and 15?
15 - m
m + 15
15m
m - 15

Explanation:

Step1: Understand the operation

The problem asks for the sum of a number \( m \) and 15. The sum means addition.

Step2: Analyze each option

• Option 1: \( 15 - m \) is subtraction (15 minus \( m \)), not sum.
• Option 2: \( m + 15 \) is addition of \( m \) and 15, which is the sum.
• Option 3: \( 15m \) is multiplication (15 times \( m \)), not sum.
• Option 4: \( m - 15 \) is subtraction (\( m \) minus 15), not sum.

Answer:

The expression that represents the sum of a number \( m \) and 15 is \( m + 15 \), so the correct option (assuming the purple card with \( m + 15 \) is the relevant one, say if options are labeled as per the cards: the purple card option, e.g., if we consider the options as the four cards, the one with \( m + 15 \) is the answer. If we need to present with option identifiers (assuming the order: green: \( 15 - m \), purple: \( m + 15 \), orange: \( 15m \), cyan: \( m - 15 \)), then the answer is the purple card option, e.g., if we label them as A: \( 15 - m \), B: \( m + 15 \), C: \( 15m \), D: \( m - 15 \), then the answer is B. \( m + 15 \)