I NEED HELP OR I FAIL THIS TEST PLEASE
A county fair charges $15 for admission and $0.50 per ride ticket. If Omar goes to the fair with $25, which equation could he use to determine the number of ride tickets he could purchase?
A: 15x + 0.50 = 25
B: 15.50x = 25
C: 15 + 0.50x = 25
D: 0.50x = 25