Answer: 35.3
Explanation: (-3-2-1+0+1+2+....27)/30 = 35.3
first box - $2.90 per pound
second- $2.50 per pound
third- $2.98 per pound
fourth- $2.00 per pound
The answer is 4.5 × 10 -8
Well, let us figure out what the first store will cost.
40*6.95=278
Now for the second store
325*0.8=260
So the first store is $278, while the second store is $260, so Elisa should buy shirts from the second store