Question

The cost of admission for a student is $4 less than the cost of admission for an adult.

Answer 1

A. x-4; x representing the cost of admission for adults.
b. $3.50
c. $6

Answer 2

A. x=adult
x-$4=y=student
f(x)=x-4

B. x-4 where x=$7.50
$7.50-$4.00=$3.50

C. y=x-4 where y=2
$2=x-$4
x=$6

Hope that helps.