zoo is the answer....................................................................
It can be 1/3, 1/7, 2/7, 3/7, 1/5, 2/5, 1/13, 2/13, 3/13, 4/13, etc
After 5 months you will have $160
so,
10
10×2 =20
20×2=40
40×2 =80
80×2=160
hence proved that after 5 months you will have $160
The first picture.
The length of the base is horizontal and extends to 2b.
Therefore the coordinate of N is (2b,0)
We set up an equation: 3*? -2= 13
⇒ 3*?= 13+2 (inverse operation)
⇒ 3*?= 15
⇒ ?= 15/3 (inverse operation)
⇒ ?= 5
The correct answer is c. 5.