can you show me the formula for this math problem?

How . Work together to help Danielle and Jordan figure out the amount and number of coins in Grampa's pockets. Each pocket contains at least one of each coin: penny, nickel, and dime. There may be more than one combination of coins that will work for each pocket description. . If your child gets stuck on one problem, leave it and move on to another one. Go back later to the problem that was difficult. Talk about how you solved each problem and describe the strategies you used. 1. This pocket contains: Half as many nickels as pennies 4 dimes 16 coins in all 2. This pocket contains: Twice as many nickels as dimes 8 nickels 85c in all 3. This pocket contains: An equal number of nickels and pennies The number of dimes is a square number.' $1.08 in all 4. This pocket contains: Two more pennies than nickels The value of nickels is four times the value of the pennies. $1.00 in all