What does it mean to cube something, you

To multiply it by itself three time eg 2x2x2

In math, a cube is a number multiplied by itself three times. The cube of 2 is 8 (2 x 2 x 2). ... As a verb, cube means to cut into cube shapes.

Step-by-step explanation:

SOLVING FOR COUPON:
$130.00
divide by 5 to get 20% of the total
$26.00 = 20%
divide the $26 by 4 to get 5% of the total
$6.50 = 5%
multiply by 3 to get 15%
$19.50 = 15% coupon

$130.00 - $19.50 = $110.50

SOLVING FOR TAX:
$110.50
divide by 100 to get 1% of the total
$1.105
multiply by 6 to get 6% of the total
$6.63

$110.50 - $6.63 = $103.87 is the final total