Answer:
26 customers
Step-by-step explanation:
Represent customers entering as y and those buying hot dogs as x
[tex]y = 4x + 9[/tex]
[tex]y = 3x + 35[/tex]
Required
Determine the number of people buying hotdogs (x)
Substitute 4x + 9 for y in the second equation
[tex]4x + 9 = 3x + 35[/tex]
Collect Like Terms
[tex]4x - 3x = 35 - 9[/tex]
[tex]x = 26[/tex]