Drag each sign or value to the correct location on the equation. Each sign or value can be used more than once, but not all sign
s and values will
be used.
The focus of a parabola is (-4,-5), and its directrix is y=-1. Fill in the missing terms and signs in the parabola's equation in standard form.
be used.
The focus of a parabola is (-4,-5), and its directrix is y=-1. Fill in the missing terms and signs in the parabola's equation in standard form.
1 answer:
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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