Which rate is the best buy (meaning it has the lowest unit cost)?
2 answers:
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Answer/Step-by-step explanation:
An equation that describes the relationship can be written as .
Using the two sets of coordinates, (2, 140) and (4, 280), calculate the slope (m) as shown below:
Substitute m = 70 into
The equation would be:
This equation can be interpreted as follows:
The heart's resting rate is 70 beats each minute.