Answer:
probably t=40-3h cause of simple math if you don't understand I suggest using khan academy
12c + 3a + 6d = total bill when d stands for dessert and a stands for appitizer and 12 stands for drinks and meals
The correct answer to your question is 20x+25
To check if this point lies on the line, plug in a 2 for x and a y for 1 and solve
x+2y=5
2+2(1)=5
4=5
Since this statement isn't true, then the point doesn't lie on the line
Hope this helps