1) John spent $36 to buy 4 basketballs. What was the price per basketball?

 $9

Step-by-step explanation:

To get the cost, also called the unit rate, we divide.

$36 divided by $4 = $9

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%

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