First, we can substitute the expression for y in the first equation:
5x + 4(x+2) = 89
5x + 4x + 8 = 89
9x + 8 = 89
9x = 81
x = 9
Now we can substitute the value of x back into the first equation to find the cost of one ticket to the 3-D showing:
y = x + 2
y = 9 + 2
y = 11
Therefore, the cost of one ticket to the 3-D showing is $11.
The answer is C. $11
Tickets to the 3-D showing of a certain movie cost $2.00 more than tickets to the regular showing. Oliver bought five regular tickets and four 3-D tickets, and the total cost was $89. The situation can be represented by a system of equations.
{y=x+2
5x+4y=89
What is the cost of one ticket to the 3-D showing?
A
$7
B
$9
C
$11
D
$13
1 answer