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Tavon has a gift card for $125 that lose $3for each​ 30-day period it is not used. He has another gift card for $105 that loses $2.50 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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rajvirthind1992

Answer:

ans is here

Step-by-step explanation:

80 - 3.50x ........ (i)

70 - 3x ..............(ii)

Set them equal;

80 - 3.50x = 70 - 3x

Solve for x. 80-70 =3.50x - 3x

10=0.50x

20=x

There will be 20 days out of the 30-day period until the cards will be equal in value.

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