Respuesta :
Let x be the number of 30 days.
(a) 65 - 2.5x = 55 - 2x
(b) 65 - 2.5x = 55 - 2x
65 - 55 = 2.5x - 2x
0.5x = 10
x = 20
Therefore, each card will result in the value of $15 when they have equal value.
(a) 65 - 2.5x = 55 - 2x
(b) 65 - 2.5x = 55 - 2x
65 - 55 = 2.5x - 2x
0.5x = 10
x = 20
Therefore, each card will result in the value of $15 when they have equal value.