Answer:
$6.45
Step-by-step explanation:
$21.50-$15.05=$6.45
Start finding the slope of the line

using one of the points find the intercept and the standard form

the equation of the line is
The first option :
Multiply the first equation by 8 and the second equation by 2
would not result in the elimination of the variables in this system
Proportional mate try that maybe then
Answer:
180 feet
Step-by-step explanation:
The length of each curtain = 48 inches. Let the length of the curtain in feet be represented by x.
But,
1 inch = 12 feet
So that,
48 inches = x feet
⇒ x = 
= 4
Thus,
48 inches = 4 feet
The number of feet of fabric needed for 45 curtains can be determined as:
45 x 4 feet = 180 feet
Therefore, 180 feet of fabric would be needed to make 45 curtains.