Which value is greater than 0.4
2 answers:
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The y-intercept (where x = 0) of the equation is at -20.
For every 60 the x runs, the y falls by -10. Use rise over run to determine the slope of the equation.
Slope-intercept form is determined by the following equation:
m is your slope, and b is your y-intercept.
Plug the slope and y-intercept into the equation.
For every 60 the x runs, the y falls by -10. Use rise over run to determine the slope of the equation.
Slope-intercept form is determined by the following equation:
m is your slope, and b is your y-intercept.
Plug the slope and y-intercept into the equation.
Answer:
B. 7.3 years
Step-by-step explanation:
The question is wrong. The correct function is :
We have the function that represents the value of a piece of farm equipment after
years.
This means that when its original value is :
Now we want to calculate approximately when will its value be half its original value. Then, we write :
is half of its original value. We need to find
that satisfies the following equation :
Solving for :
⇒
Now we apply natural logarithm to each side of the equation :
Using logarithm properties :
⇒
⇒
≅
The correct option is B. 7.3 years