I think the answer is 7/2. Which is also equal to 3.5 cookies. Because:
1/2 + 3/1
3/1 x2
1/2 + 6/2
= 7/2 = 3.5
This problem calls for calculating the unit cost in each case and then comparing the unit costs.
$1.79
---------- = $0.09/oz
20 oz
Noting that 1 lb = 16 oz,
$2.59
---------- = $0.14
18 oz
$1.79 for 20 oz is definitely the better buy (less expensive) when compared to $2.59 for 18 oz.
2d + 8 is equivalent to your expression
The first thing you should do is draw the points in the Cartesian plane and then join them to find the polygon.
The searched polygon can be seen in the attached image.
The area of the polygon will be the area of the square plus the area of the triangle.
At = (6) * (8) + (1/2) * (5) * (8) = 68
At = 68
answer the area of the polygon is 68units ^ 2