Answer:
The cost of one ticket to the game was [tex]\$7.5[/tex]
Step-by-step explanation:
Let
x-----> the cost of one ticket to the basketball game
y-------> the cost of one souvenir
we know that
[tex]2x+y=17.25[/tex]
[tex]y=-2x+17.25[/tex] -------> equation A
[tex]5x+2y=42[/tex] -------> equation B
substitute equation A in equation B and solve for x
[tex]5x+2(-2x+17.25)=42[/tex]
[tex]5x-4x+34.50=42[/tex]
[tex]x=42-34.50=\$7.5[/tex]