College students are offered an 8% discount on a textbook that sells for $37.50. if the sales tax is 8%, find the cost of the textbook including the sales tax.

Original Price

$37.50


Discount

8% of $37.50
= 0.08 x 37.50
= $3


Price after Discount

$37.50 - $3 = $34.50


Sales Tax

8% 0f $34.50 
= 0.08 x 34.50
= $2.76


Price with Sales Tax

$34.50 + $2.76 = $37.36


$37.26

The correct graph is the second one, with the points being at (-6,0), (2,0) and reaching down to (-2,-8)