Question

1. 3(n - 7)

a) 3n - 21 b) 32n + 28
c) 7n - 21 d) 20n - 12

Explanation:

Step1: Apply distributive property

$3(n - 7) = 3 \times n - 3 \times 7$

Step2: Calculate each term

$3 \times n = 3n$, $3 \times 7 = 21$

Step3: Combine results

$3n - 21$

Answer:

A) 3n - 21