To determine which brand costs the least per ounce, we need to calculate the cost per ounce for each brand.
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Brand A:
- Cost: $0.88 for 4 oz
- Cost per ounce: \( \frac{0.88}{4} = 0.22 \) dollars per ounce
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Brand B:
- Cost: $1.05 for 5 oz
- Cost per ounce: \( \frac{1.05}{5} = 0.21 \) dollars per ounce
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Brand C:
- Cost: $1.60 for 8 oz
- Cost per ounce: \( \frac{1.60}{8} = 0.20 \) dollars per ounce
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Brand D:
- Cost: $2.28 for 12 oz
- Cost per ounce: \( \frac{2.28}{12} = 0.19 \) dollars per ounce
Now let's compare the costs per ounce:
- Brand A: $0.22/oz
- Brand B: $0.21/oz
- Brand C: $0.20/oz
- Brand D: $0.19/oz
Conclusion: Brand D costs the least per ounce at $0.19.