Answer:
17
Step-by-step explanation:
the amount of visits given by the problem is:
and we have that the equation that relates the number of visits with the total cost is:
where 
is the total cost for 
number of visits.
We plug into this equation the known value of visitors:
and we solve this expression:
the total cost for 10 visitors is 17.
X = 4
Explanation:
sqrt(x) + sqrt(5 + x) = 15 / sqrt(5 + x)
sqrt(5 + x)[sqrt(x) + sqrt(5 + x)] = 15
sqrt(5x + x^2) + 5 + x = 15
sqrt(5x + x^2) = 10 - x
Take square of both sides
5x + x^2 = (10 - x)^2
5x + x^2 = 100 - 20x + x^2
Cancel x^2
5x = 100 - 20x
25x = 100
x = 4
Answer:
x > 4
Step-by-step explanation:
x + 2 > 6
-2 -2
x > 4
This graph does not show a function because it fails the vertical line test, and there are x-values that have more than one y-value.
Its the 2nd answer choice
