Serenity has some pennies and some nickels. she has no less than 18 coins worth at most $0.66 combined. if serenity has 12 pennies, determine the maximum number of nickels that she could have.

She could have 1 nickel

The answer is c because you turn 17.5% into a decimal which gives you .175 then you times that by $361.35 which gives you 63.23625 but then you round that which gives you 63.24. then you at 63.24 pulse 361.35 and you round it which gives you $425