Answer:
- L = - 8t + 80
- The x-intercept represents the time when the loan was paid off.
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According the graph
- The y-intercept is (0, 80) and x-intercept is (10, 0)
Slope-intercept equation
- y = mx + b, where m- the slope, b- the y-intercept
Find the slope
- m = (0 - 80)/(10 - ) = - 8
The line is
The x-intercept (10 weeks) represents the time when the loan was paid off.