(1) 12+0.5(t-12) (2) 6+0.5×16
=12+0.5t-0.5×12 =6+8
=12+0.5t-6 =14(元)
=(6+0.5t)元
热心网友
(1) 12+0.5(t-12) (2) 6+0.5×16
=12+0.5t-0.5×12 =6+8
=12+0.5t-6 =14(元)
=(6+0.5t)元
(这是我,别顶错了!!)
c☆郡