Answer:
7 ish
Step-by-step explanation:
if you look at where 2.5 would be on the X axis (in-between 2 and 3) and you look at the corresponding Y point, its somewhere near where 7 would be.
Answer:
Step-by-step explanation:

A = 1/2 * b * h
b = 14
h = 12
A = 1/2 * 14 * 12
A = 7 * 12 = 84 mm^2
2.04 divided by 4 is £0.51 per roll
4.68 divided by 9 is £0.52 per roll
4 pack is better deal because the 9 pack is more per roll