Which rate is the Best Buy (meaning it had the lowest unit cost)? (A) 8 for $11.00,
(B) 1 for $1.37,
(C) 4 for $5.50,
(D) 16 for 21.60

the answer is c

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b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

choose (5, 1.5) and (-1.5,-3.5)

step-by-step explanation:

5 - 1.5 =3.5

-1.5 - (-3.5) = 2

3.5 + 2 =5.5

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