WOULD:
Sara has 13 notebooks. She gets 17 more. How much does she have in total?
WOULD'NT:
Kara has 5 pencils. She gets 2 more. How much does she have in total?
The function 
is a line. As such, its domain and range is the whole real number set 
, and it has no horizontal nor vertical asymptotes.
Moreover, there's no constant term, so it's x and y intercept is the origin (0,0).
Answer:
{x + y= 239
{15x + 5.50y = 2758.50
Step-by-step explanation:
x = adults y = children and the total amount of people is 239.
$15 for adults and $5.50 for children and the total cost equals $2758.50.
