Keith has p pennies, n nickels, and d dimes in his pocket. The total number of coins is 12. The expression 0.01p+ 0.05n + 0.10d represents the value of the coins,
which is equal to $0.60. He has one fewer nickel than dimes. How many pennies
does Keith have?

Jane’s favorite fruit punch consists of pear, pineapple, and plum juices in the ratio 5: 2: 3. chapter reference how much punch can she make if she has only 6 cups of plum juice?

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)