Which of the rates shown here correspond to a unit rate of $6 per sandwich? More than one answer. Spending $40 to buy 5 sandwiches

Spending $108 to buy 18 sandwiches

Spending $100 to buy 16 sandwiches

Spending $42 to buy 7 sandwiches

Spending $42 to buy 6 sandwiches

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

80 the answer is 80

step-by-step explanation: