Given (a+2,a-2)= a for all integers a, (6,2)=

Question

a) 3
b) 4
c) 5
d) 6
e) 8

The cost of a drive-in 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

Answer 1

1.
Solve for a
a+2=6
a-2=2

2.
Let x=initial number of friends.
0.4x = 0.25(x+6)
Solve for x.