Answer:
4
Step-by-step explanation:
f(-1)=-2(-1)+2
f(-1)=2+2
f(-1)=4
There really is no way of telling. If the 51 got 100, then the rest could have gotten anything. If there is no graph, or data, or anything else to support the question, that means the 27 could have gotten any mark.
Total: 318
Student tickets: x
Adult tickets: 3x+6
x+(3x+6)=318 -> 4x+6=318 -> 4x=312 -> x=78
3(78)+6 = 234+6 = 240
240 adult tickets were sold
Put them in the mueller when it says .5
