A pair of jeans is discounted for 30% off. If the original price is $31.50, what is the discount amount that will be taken off of the original price?

$3.15

$9.45

$3.00

$22.05

$9.45

To calculate the discount amount, multiply the original price by the discount percentage (30% = 0.30):

$31.50 x 0.30 = $9.45

Therefore, the discount amount that will be taken off the original price is $9.45.