(5)(3x)+(5)(4)+(5)(-x)
15x+20-5x
Answer: 10x+20
All there is, is a picture. Is there a question?
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.
<span>B. {-5,-4,-3…. }
............</span>