Shelby paid $1.75 for a notebook at a big 75% off sale. What was the original price of the notebook?

$7.00

Step-by-step explanation:

The discount is 75% off.  To answer this question, multiply n (the original price) by (1.00 - 0.75):  0.25n = $1.75.

Solving this for n, we get $7.00

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

50

step-by-step explanation: