you have $15 and buy r raffles tickets for $.50 each. How much money do you have left?
how do you write that as an expression?
2007-08-17 11:56:08 · 4 answers · asked by sharizzle 1 in Science & Mathematics ➔ Mathematics
So you have to ask yourself what is the total cost of buying r raffles?
Answer: (1/2)r
Now ask yourself, how much money would you have left?
Answer: 15-(1/2)r
2007-08-17 12:05:19 · answer #1 · answered by Anonymous · 0⤊ 0⤋
the amount you have left will be your original amount minus the amount you spent. your original amount is $15, so that's half of it. since you spend $.50 for every ticket you buy, the amount will be $.50 times the number of tickets (r). putting it all together we have $15-.5r
2007-08-17 19:08:22 · answer #2 · answered by Anonymous · 0⤊ 0⤋
R = $15 - $0.50r
2007-08-17 19:10:32 · answer #3 · answered by Helmut 7 · 1⤊ 0⤋
i think its
.5x=15
2007-08-17 19:05:16 · answer #4 · answered by iluvolleyball 2 · 0⤊ 0⤋