Deborah is buying some supplies for the new school year.
She buys an exercise book for $\$8.14$$8.14, a pack of pens for $\$7.46$$7.46 and a pencil case for $\$9.31$$9.31.
How much does she spend in total?
A pencil is $15.8$15.8 cm long.
Aaron buys an item from the school canteen for $\$3.50$$3.50. If he pays for it with a five dollar note, how much change will he get back?
Rochelle purchased a car and is paying monthly installments of $\$138.70$$138.70 per month to pay it off. If it takes her $60$60 months to pay it off, how much will she have spent on car repayments in total?