Don't know if it's right, but do let me know! use percentage to visualise your workings. :)
B = ym + y
B - y = ym
(B - y) / y = m
or
B/y - 1 = m
Answer:
If there are N students, the total cost will be:
C(N) = $500 + $5*N.
And we want the amount that each student pays to be equal or less than $15.
then:
C(N)/N ≤ $15.
Then the inequality that represents this situation is:
($500 + $5*N)/N ≤ $15.
Now, let's solve this:
($500 + $5*N) ≤ $15*N
$500 ≤ $15*N - $5*N
$500 ≤ $10*N
$500/$10 ≤ N
50 ≤ N
So the minimum number of students needed is 50.
The two lines are perpendicular because both of the lines intersects
Answer:
-4 1/2 or -4.5 or -9/2
Step-by-step explanation:
