一道GMAT数学题……
Acertaintaxicompanycharges$3.10forthefirst]ofa
mileplus$0.40foreachadditionalof
amile.Whatwouldthiscompanychargefor
ataxiridethatwas8mileslong?
(A)$15.60
(B)$16.00
(C)$17.50
(D)$18.70
(E)$19.10
我怎么算不出来……是因为没有看懂题么……