We are given function: y= 
Where, x is the number of hours after 5a.m.
We need to approximates the number of people standing in line to catch a commuter train at 7 a.m.
From 5 a.m. to 7 a.m. total number of hours = 7-5 = 2 hours.
So, we need to plug x=2 in the given function.
Plugging x=2 in
, we get

Let us simplify it now.
2^2= 4.
Therefore,

= -20.524 + 63.642 - 3.333.
= 39.785 or 40 approximately.
Therefore, the number of people in line at 7 a.m. is approximately 40 people.
Option D.40 is correct option.
Answer:
1)
- Greater than -10 and less than 10.
2)
- Greater than or equal to -10 and less than or equal to 10.
3)
- Greater than or equal to -10 and less than 10.
4)
Greater than -10 and less than or equal to 10.
Step-by-step explanation:
There are four form of describing that set in interval notation, which presented below:
1)
- Greater than -10 and less than 10.
2)
- Greater than or equal to -10 and less than or equal to 10.
3)
- Greater than or equal to -10 and less than 10.
4)
Greater than -10 and less than or equal to 10.
Answer:
There are no solutions
Step-by-step explanation:
Answer:
Step-by-step explanation:

b.
an=an-1+3
C.
when x=15
y=3×15-2=45-2=43
a15=43
Answer:
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