Respuesta :

8 min call = 2.80
4 min call = 1.40
2 min call = 0.70
1 min call = 0.35

(I just halved the times and prices to get the answers)

8 + 8 + 1 = 17
2.80 + 2.80 + 0.35 = 5.95

17 min call = $5.95 (A)