A sandwich store charges $20 to have 3 turkey subs delivered and $26 to have 4 delivered. Is the relationship between number of turkey subs delivered and the amount charged proportional? I know the answer is no but I need help with understanding how the answer is no, please explain!

No. Explanation below

Step-by-step explanation:

20$ = 3 subs

26$ = 4 subs

-> into ratios

20 : 3

26 : 4

-> into fractions

20/3 = about 6.67

26/4 = 6.5

6.67 ≠ 6.5

The relationship is not proportional.

Another way:

20/3, 26/4

-> cross multiply

80 ≠ 78

The relationship is not proportional.

3 1/3 x 2 3/5 = 8 2/3

step-by-step explanation:

just multiply the first number by the second number to get your answer.

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step-by-step explanation: