##Example 1

minutes = int(input("How many minutes of air time were used? "))
texts = int(input("How many texts were sent? "))

if minutes<=60 and texts<=40:
    tax =(10.72)*.07
    bill = 10.72+tax
    bill = '{:,.2f}'.format(bill)
    print("Your monthly bill is $",bill)
elif minutes<=60 and texts >40:
    bill = (((texts*.1)-4)+10.72)*1.07
    bill = '{:,.2f}'.format(bill)
    print("Your monthly bill is $",bill)
elif minutes >60 and texts <=40:
    bill = (10.72+(minutes*.2)-12)*1.07
    bill = '{:,.2f}'.format(bill)
    print("Your monthly bill is $",bill)
else:
    bill = (((texts *.1) -4)+10.72+(minutes *.2)-12) *1.07
    bill = '{:,.2f}'.format(bill)
    print("Your monthly bill is $",bill)
    
#########################

##Example 2

minutes = int(input("How many minutes of air time were used? "))
texts = int(input("How many texts were sent? "))

if minutes<=60 and texts<=40:
    bill1 =(10+0.72)*1.07
    bill1 = '{:,.2f}'.format(bill1)
    print("Your monthly bill is $" + str(bill1))
else:
    bill2 = (10 + ((minutes-60)*0.20) + ((texts-40)*0.10) + 0.72) * 1.07
    bill2 = '{:,.2f}'.format(bill2)
    print("Your monthly bill is $" + str(bill2))
    
#########################

##Example 3

AT = int( input("How many minutes of air time were used? ") )
TXT = int( input("How many texts were sent? ") )

if AT > 60:
    ATCost = (AT-60) * .2
else:
    ATCost = 0
    
if TXT > 40:
    TXTCost = (TXT-40) * .1
else:
    TXTCost = 0
    
Bill = (ATCost + TXTCost + 10 + .72) * 1.07
Bill = '{:,.2f}'.format(Bill)

print("Your monthly bill is $",Bill, )