(BRAINLIEST) The Arcadia Theater charges $4 for adult tickets and $3 for student tickets. Mr. Steele purchased 9 tickets (some s
tudent and some adult) for $31. Which system of equations could be used to find the number of adult tickets and student tickets purchased? A. a + s = 31 ; 4a + 3s = 9
B. 4a + 3s = 31 ; a + s = 9
C. 3a + 4s = 31 ; a + s = 9
D. 3a + 4s = 9 ; a + s = 31
