Answer: B) as x → -5 from the left, y → -∞
as x → -5 from the right, y → +∞
<u>Step-by-step explanation:</u>

Refer to the graph which confirms that
- from the left, y tends toward -∞
- from the right, y tends toward + ∞
Answer:
2.60 gr
Step-by-step explanation:
We need to consider the function
where Po is the initial substance k is the rate of decay and t is the time
We know that
and at the 7 th year P(t) is 7
This means

We solve for k

Answer: 72°, 108°, 108°
<u>Step-by-step explanation:</u>
Vertical angles are congruent (equal) so if one angle is 72° then its vertical angle is also 72°.
A vertical angle and its adjacent angle form a 180° angle, so the other two angles are each 180° - 72° = 108°
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<em>see image below</em>
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Answer:
y=2x-4
Step-by-step explanation:
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