Jose bought a hamburger at an arena concession stand for $7.50. The price included a tax of 8%. What was the price of
the hamburger without the tax?
$7.42
$6.70
$8.10
$6.94

$6.94

Step-by-step explanation:

Let's say that the cost of the hamburger without tax in 100%. Then the price with tax is 108% because there is an 8% tax. Therefore, $7.50 corresponds to 108%. if we divide 7.50 by 108 we get 0.0694444 or 1%. Finally, we multiply by 100 to get 100% or the cost without tax which is $6.94.

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%

linear pair postulates