Answer:
the answer is 
Step-by-step explanation:

hope this helps :)
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.
80/25= 3.2
550/3.2= 171.875
so, 171.875 students round that up to 172
Answer:
The equilibrium point is (3, 3620)
Step-by-step explanation:
We set the supply and the demand equation equal to each other and solve:

We can solve by factoring:

Setting each factor equal to zero we get:

Only a positive quantity makes sense, so q=3 is the equilibrium quantity.
To get the equilibrium price we just plug 3 in place of q in any of the functions. Let us use the demand function which is easier to handle:

Therefore the equilibrium price is p=3620
In ordered pair form the equilibrium point is (3, 3620)
Answer:
y=−x/3+7 .
Step-by-step explanation:
The equation of the line in the slope-intercept form is y=3x−5.
The slope of the perpendicular line is negative inverse: m=−13.
So, the equation of the perpendicular line is y=−x3+a.
To find a, we use the fact that the line should pass through the given point: 5=(−13)⋅(6)+a.
Thus, a=7.
Therefore, the equation of the line is y=−x/3+7.