Tavon has a gift card for $70 that loses $3 for each 30-day period it is not used. He has another gift card for $ 60 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?
