Elizabeth has $51.83. Nicholas has $28.76. Jerry has $15.00. How much more does Elizabeth have than Nicholas?

Elizabeth has $51.83. Nicholas has $28.76. Jerry has $15.00. How much more does Elizabeth have than Nicholas?
Joseph starts with $49.06 and spends $9.50 on candies. Andrea spends $5.00 on candies. How much money does Joseph have left?
Angela starts with $88.59 and spends $8.91 on Skittles. Emily spends $6.00 on Skittles. How much money does Angela have left?
Denise starts with $31.30 and spends $18.24 on Skittles. Carol spends $4.00 on Skittles. How much money does Denise have left?
Christopher starts with $95.35 and spends $9.63 on Skittles. Elizabeth spends $15.00 on Skittles. How much money does Christopher have left?