求助几道蓝皮的数学题

Devil3

1。第151页118题，图我打不上来。麻烦有做过的亲们帮忙解答下。一堆堆箭头好乱好乱。
2。which of the following fractions has a decimal equivalent that is a terminating decimal？
    A。10/189
    B。15/196
    C. 16/225
    D.  25/144
    E.  39/128
   这个题要一个一个算么?
3.On a map Town G is 10 centimeters due east Town H and 8 centimeters due south of Town J.Which of the following is closet to the straight-line distance,in centimeters,between Town H and Town J on the map？
  A。6   B。13   C。18   D。20   E。24
4.if the number of square units in the area of circle C is twice the number of linear units in the circumference of C,What is the number of square units in the area?
  A. 4  B.8  C.4π D.8π E.16π
5。第165页的212题是不是没有图呢?有会解的亲不?
6。A certain quantity is measured on two different scales ,the R-scale and the S-scale, that are related linearly.Measurements on the R-scale of 6 and 24 correspond to measurements on the S-scale of 30 and 60，respectively.What measurement on the R-scale corresponds to the measurement of 100 on the S-scale?
 A.20 B.36 C.48 D.60 E.84
7.If n is a positive integer, what is the remainder when 3(指数8n+3)+2 is divided by 5?
  A.0  B.1  C.2  D.3  E.4
这个题答案选的A,我觉得应该选E.

Devil3

Devil3

Devil3

Devil3

自己顶下，亲们帮帮忙。。