Question

Which expression should appear on Line 3?

210 + 600 + 15

2,100 + 600 + 15

2,100 + 60 + 15

210 + 60 + 15

Answer 1

2,100 + 60 + 15

Explanation:

line 2 = 700 × 3 + 20 × 3 + 5 × 3 ( perform products and sum )

line 3 = 2,100 + 60 + 15