Posted by Grace on .
Given (a+2,a2)= a for all integers a, (6,2)=
a) 3
b) 4
c) 5
d) 6
e) 8
The cost of a drivein movie is $y per vehicle. A group of friends in a van shared the admission cost by paying $0.40 each.If 6 more friends had gone along,everyone would have paid only $0.25 each. What is the value of $y?
a) 4
b) 6
c) 8
d) 10
e) 12

Math 
MathMate,
1.
Solve for a
a+2=6
a2=2
2.
Let x=initial number of friends.
0.4x = 0.25(x+6)
Solve for x.