The number of calories in a serving of oatmeal is proportional to the size of the serving. Suppose there are 160 calories in a 40 gram of serving. Write an equation that models the relationship between the number of calories "c" and the size "s" of a serving of oatmeal.

s=4c

constant of proportionality, k=4

Step-by-step explanation:

Given that calories served is proportional to size of serving.

#We determine the proportionality constant, k:

Where k is the factor of proportionality and x and y the quantities:

The constant of proportionality is k=4 and the relationship equation is given as s=4c

john earns $14.00 for two hours of work.

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step-by-step explanation: