Final answer:
Using the equation d=2c from Betty's Bakery, the total price for 5 cupcakes is calculated by multiplying 2 times 5, which equals $10.
Step-by-step explanation:
To find the price of 5 cupcakes at Betty's Bakery, you use the equation provided: d=2c, where d represents the total price in dollars and c represents the number of cupcakes.
Following the equation, multiply the number of cupcakes (5) by the price per cupcake ($2):
d = 2 * 5 = $10
Hence, the price of 5 cupcakes is $10.
Therefore, the correct answer is: B) $10