That would be none of them.
a million nickels
Many older US nickels can be worth more than face value, in some cases a LOT more, but the prices depend VERY much on the coins' dates, conditions, and mint marks. A few examples:"War nickels" dated 1942 to 1945 with a large mint mark on the back are worth 75 cents to a dollar in average condition. These special nickels contain 1.75 gm of silver, and are the only US nickels to ever contain that metal.Average-condition buffalo nickels with visible dates can be worth at least a dollar, and sometimes much more depending on their date and mint mark.Average-condition Liberty Head nickels are worth at lease 2 or 3 dollars each.Rarities like a 1937 nickel with a 3-legged buffalo, or a 1917/18 overdate, can be worth hundreds of dollarsThe five 1913 Liberty Head nickels, an unauthorized striking, have sold for up to roughly $4 million.
The series 1957 $1 silver certificate is a common bill, not worth much more than face. In crisp, uncirculated condition, it might be worth upwards of about $5.
1957 is by far the most common series for $1 silver certificates. In average circulated condition, one is worth around $2. In better condition, it's worth a little more.
3 dimes is 30 cents and 5 nickels is 25 cents so 3 dimes is worth more.
they were made that way
Buffalo nickels, like modern nickels, are made of 75% copper and 25% nickel, NOT silver. 1935 is a common date, worth a dollar or two in average condition and upwards of $25-30 if uncirculated. A 1935-D is worth a little more.
1957 is by far the most common series for $1 silver certificates. In average circulated condition, one is worth around $2. In better condition, it's worth a little more.
Despite being more than 50 years old, 1957 is a common series for $1 silver certificates. On average, one is worth two to three dollars.
There's no such thing as a U.S. silver dollar coin from 1957.
7 quarters and 11 nickles
5 nickels is a quarter. 15 nickels is 75 cents. Four more nickels makes it to 95 cents, for a total of 19 nickels. That makes sense, because 20 nickels would be a dollar, and you are only one nickel short of that.