I assume you refer to the 'Perv Nert' equation:
Solving for n,
Answer:
1 1/8
Step-by-step explanation:
x + 1 3/4 = 2 7/8 ( subtract 1 3/4 to isolate x)
2 7/8 is the same as 23/8
1 3/4 is the same as 7/4
you have to have the same denominator to subtract the fractions so you multiply 7/4 by 2
this gets 23/8 - 14/8 ( you subtract 23-14)
you get 9/8 which is the same as 1 1/8
Let G=cost of gold ticket.
Silver ticket costs
S=G/2+7, and
S=6G/5-14
Equate both,
6G/5-14=G/2+7
simplify
6G/5-G/2 = 7+14
12G/10-5G/10=21
7G/10=21
Cross multiply
G=10*21/7=30 => Gold tickets cost $30 each.
S=G/2+7=30/2+7=15+7=22
Silver tickets cost $22 each.
The first 100 gold ticket purchasers will therefore save $30-$22=$8 each ticket.
Y=5x - 7
The slope-intercept form of a straight line is
y
=
m
x
+
c
In this case we have a point,
(
x
,
y
)
and the slope,
m
so all we need is a value for
c
.
Substitute into