
Kenneth S. answered 01/24/18
Tutor
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
CARD, NOT GARD
SLOPE, NOT SLOP
EQUATION, NOT EQUAITION
y = 25w + 250 expresses the total after w weeks, in dollars, PROVIDED NO PURCHASES ARE MADE TO DECREASE THE EVER-GROWING VALUE.
This is a rather strange situation, one generally adds money into a savings account, but gift cards usually start at a fixed amount and decrease with successive purchases.