Question

Please help!( number 10, part A only)

Answer 1

Doubling the width would use less cardboard.
Justification:
Doubling the height will use 9in more cardboard
Doubling the width will only use 2 more inches of cardboard

Answer 2

Doubling the width would use less cardboard.
Justification:
Doubling the height will use 9in more cardboard
Doubling the width will only use 2 more inches of cardboard