Answer:
Part A) $202.50=9
Part B) $292.50=11
Step-by-step explanation:
Part A) y is the total cost, x is the total number of students. Therefore, y=x.
Which makes $202.50=9
Part B) since $202.50= 9 students,
1 student= $202.50÷9 = $22.50
Since 4 students joined,
4 students= $22.5 × 4= $90.00
4+9= 11 students
So 11 students= $202.50+$90.00 =$292.50
the total cost will now be $292.50
