Which of the following is the better deal?

O 6-oz box of crackers for $1.08
O 7-oz box of crackers for $1.19
O 8-oz box of crackers for $1.20
O 9-oz box of crackers for $1.26

the better deal would be 9-oz box of crackers for 1.26

Step-by-step explanation:

First, you write the numbers down as a fraction. 6/1.08, 7/1.19, 8/1.20, and 9/1.26. and then you divide the cost by oz. 1.08÷6 is .18, 1.19÷7 is 17, 1.20÷8 is .15, and 1.26÷9 is .14. So, the best deal would be 9 oz for 1.26 because it is only 14 cents per oz.

there are lots of ways.   pick's theorem tells us if the vertices are lattice points the area a is

a = b/2 + i - 1

where b is the number of boundary lattice points and i is the number of interior lattice points.

in the figure i count b=16, i=50 so

a = 8 + 50 - 1 = 57

let's try the shoelace formula.   the area is half the sum of the cross products of the sides.  

a(-2,6)   -2(2)-6(-5) = 26

b(-5,2)   -5(-3) - 2(-2) = 19

c(-2,-3) -2(-3) - (-3)(4) = 18

d(4,-3)   4(3) - (-3)(5) = 27

e(5,3)   5(3) - 3(1) = 12

f(1,3)     1(6) - 3(-2) = 12

a(-2,6)

each of the cross products is twice the area of the triangle with the associated side and one vertex the origin. so the area of abo=26/2=13.

area = (1/2) (26 + 19 +   18 + 27 + 12 + 12) = 57

that checks!