math is hard plz help

Answer:
see explanation
Step-by-step explanation:
(a)
Cost (C) = 4x + (4 × 19), that is
C = 4x + 76 or
4x + 76 = 572 ← equation modelling the situation
(b)
Subtract 76 from both sides
4x = 676 ( divide both sides by 4 )
x = 169
The cost of a ticket is $169