A piggy bank contains 9 pennies, 7 half dollars, and 7 dimes. What is the total

amount of money in the piggy bank?

9*1 + 7*50 + 7*10 = ___ cents

9 + 7*50 + 7*10 = 429 cents = $4.29

To find the total amount of money in the piggy bank, you need to calculate the sum of the value of each coin.

First, let's determine the value of each coin:
- A penny is worth $0.01.
- A half dollar is worth $0.50.
- A dime is worth $0.10.

Now, let's calculate the total value of each type of coin and then sum them up:
- The value of the pennies is 9 * $0.01 = $0.09.
- The value of the half dollars is 7 * $0.50 = $3.50.
- The value of the dimes is 7 * $0.10 = $0.70.

Finally, add up the values of all the coins:
$0.09 + $3.50 + $0.70 = $4.29.

Therefore, the total amount of money in the piggy bank is $4.29.