Final answer:
To find the new price of the jigsaw puzzle with a 30% markup, multiply the original price of $3 by 1.30. The new price is $3.90.
Step-by-step explanation:
To find the new price, we need to calculate a 30% increase on the original price of $3. We can do this by multiplying $3 by 1.30 (which represents a 30% increase in decimal form).
$3 * 1.30 = $3.90
Therefore, the new price of the jigsaw puzzle is $3.90.