Answer:
About one year
Step-by-step explanation:
1500*0.9=1350
She will have $57 back because the ticket are buy one get one free and she has 7 friends so for 3 tickets that u buy 6 of your friend get to go and then thei is still one more friend so you have to buy one more ticket so 10.75*3=32.25
and 32.25+10.75=43 and 100-43=57
Answer:
a)5
b)17
c) ?

Step-by-step explanation: