Answer:
Step-by-step explanation:
Answer:95.75
13x + 4y = 487
13*8 + 4y = 487
4y = 487 - 13*8
y = (487 - 13*8)/4
y = dollars per tree = 95.75
6x-12=12+5x
6x - 5x = 12 + 12
x = 24