120 square centimeters i think?
When a straight line is given the form:

m is the gradient. It shows how the value of y changes for an increase of x by 1.
So, in this case, the gradient is
4
5/2 is a rational because this can be expressed as a ratio or fraction. 5/2 in ratio can be written as 2.5
Answer:
$407.34
Step-by-step explanation:
1. Find the discount. This can be done by multiplying the original cost by the discount percentage.
678.90 x 40% = $271.56
2. Subtract the amount of the discount from the original price.
$678.90-$271.56 = $407.34
The new price is $407.34