The answer is A i believe so cause its adding 4 seats every time and you multiply 4*21 <span />
Answer: $20
Step-by-step explanation:
Let 'x' be the cost of a ticket at Haynes
Let 'y' be the cost of a ticket at Valley
Since the total cost from both schools are the same, we can write it as:

Since the cost of tickets at Valley was $5 less than Haynes, we can write it as:

Now we have two equations, we can use to substitute into the other expression:

we substitute y in this equation with the other equation



Therefore the cost of the ticket at Haynes is $20 and the cost of the ticket at Valley is $15.
Answer:
29 and -18
Step-by-step explanation:
f(x)= -3x+12
f(-9)= -3(-9)+2
f(-9)= 27+2
f(-9)= 29
g(x)= x2
g(-9)= -9(2)
g(-9)= -18