Answer:
<h2><u>$52.5</u></h2>Step-by-step explanation:
Step one:
given data
we are given that the linear function for the cost is c=3.5t
c is the cost and
t is the number of tickets.
We are told that t=15, to find c, let us put the value of t in the linear function for the cost
<u>This shows that 15 tickets will cost $52.5</u>
<u />
Given:
Total students = 60
Student passed = 85%
To find:
The number of students who failed and then convert it in %.
Solution:
We have,
Number of passed student = 85% of Total students
=
=
So, number of passes students is 51.
Number of students who failed = Total students - Passes students
=
=
So, number of students who failed is 9.
Therefore, 15% students fail in the test.