emmanuelmashao5504
07.07.2019 •
Mathematics
Tavon has a gift card for $ 50 that loses $ 2 for each 30-day period it is not used. he has another gift card for $ 40 that loses $ 1.50 for each 30-day period it is not used. a. write and solve an equation for the number of 30-day periods until the value of the gift cards will be equal. b. what will the value of each card be when they have equal value?
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Ответ:
So we know that month 1: gift card 1: 50$ gift card 2: 40$
month 2: gift card 1: 48 gift card 2: 38.50
month 3: gift card 1: 46 gift card 2: 37
month 4: gift card 1: 44 gift card 2: 35.5
month 5: gift card 1: 42 gift card 2: 34
month 6: gift card 1: 40 gift card 2: 32.5
month 7: gift card 1: 38 gift card 2: 31
month 8: gift card 1: 36 gift card 2: 29.5
month 9: gift card 1: 34 gift card 2: 28
month 10: gift card 1: 32 gift card 2: 26.5
month 11: gift card 1: 30 gift card 2: 25
month 12: gift card 1: 28 gift card 2: 23.5
month 14: gift card 1: 26 gift card 2: 22
month 15: gift card 1: 24 gift card 2: 20.5
month 16: gift card 1: 22 gift card 2: 19
month 17: gift card 1: 20 gift card 2: 17.5
month 18: gift card 1: 18 gift card 2: 16
month 19: gift card 1: 16 gift card 2: 14.5
month 13: gift card 1: 14 gift card 2: 13
month 13: gift card 1: 12 gift card 2: 11.5
month 14 gift card 1: 10 gift card 2: 10
MONTH 14 THEY ARE EQUAL
Ответ: