Answer:
the answer is D
Step-by-step explanation:
Unit price = price / quantity
1.20 / 20 = 0.06 per ounce
0.85 / 12 = 0.071 per ounce
The better deal is the 20 oz for $1.20
Make the length x+4 and the width x and then make a formula x(x+4)=21
then u ll get x^2+4x-21=0 and then solve for x ..... the width is 3
