Question

A poster is shown below: what are the dimensions if the poster enlarged by a factor of 7/2

Answer 1

If the poster is 6 by 18, and it increases by a factor 7/2, then you multiply both the height and length by 7/2:
$6 \times \frac{7}{2} = 21 \\ 18 \times \frac{7}{2} = 63$
Therefore, the new height is 21, and the new length is 63.