We calculated the value of each type of coin that Coretta has, and added these four values together to find that she has a total of $14.80.
Coretta has 79 nickels, 31 dimes, 13 quarters, and 9 fifty-cent pieces. In order to find out the total amount of money she has, we first determine the total value for each type of coin by multiplying the coin's value by the number of such coins Coretta has. We then add up these four totals to get the grand total.
To start, a nickel is worth 5 cents, so 79 nickels is worth 79 * 5 cents = 395 cents. A dime is worth 10 cents, so 31 dimes is worth 31 * 10 cents = 310 cents. A quarter is worth 25 cents, so 13 quarters is worth 13 * 25 cents = 325 cents. A fifty-cent piece is worth 50 cents, so 9 fifty-cent pieces is worth 9 * 50 cents = 450 cents.
To get the grand total in cents, we add these up: 395 + 310 + 325 + 450 = 1480 cents. Dividing by 100 (since there are 100 cents in a dollar), we get $14.80. So, Coretta has $14.80 of coins.
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