Answer:
3.5x + 2.50y = 1237.50
425 = x + y
Step-by-step explanation:
number of adult tickets: x
number of student tickets: y
( value of adult ticket [3.50]* number of adult tickets [x]) + (value of student ticket [2.50] * number of student tickets [y]) = total value (1237.50)
(number of adult tickets [x]) + (number of student tickets [y]) = total (425)
12/20=3/5 5/20=1/4 so the answer would be 12/20 + 5/20
2x=6
2x+1=7
2x-1=5
-3
y = mx + b
b is the y-intercept