1. mr. xavier took his 18 students and 9 other chaperones to an amusement park. he paid $882 for admission. mrs. yadira took her 11 students and 4 other chaperones to the same amusement park. she paid $489 for admission. which equation should be added to the equation 18s + 9c = 882 to determine s, the amount the amusement park charges for student admission? a. 22s + 10c = 978 b. 11s + 5c = 489 c. 9s + 5c = 441 d. 11s + 4c = 489

Given that number of students taken by Mr. Xavier = 18

Let admission fee per student = $s

Then total charge of students = 18s

Given that number of chaperones taken by Mr. Xavier = 9

Let admission fee per chaperones = $c

Then total charge of chaperones = 9c

Then total fee paid by Mr. Xavier = 18s+9c

which is equal to fee paid $882

So we get equation 18s+9c=882

Same way we can create equation for fee paid by Mrs. Yadira

which is 11s+4c=489

This equation can be added to the previous equation in order to solve for unknown variables s and c.

Hence final answer is D. 11s + 4c = 489

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stops on an even number.