Answer:
between 0 and 1: divide 1 by 2 = 0.5
between 1 and 1/2: divide 1/2 by 2 (0.25) and multiply that by 3 = 0.75
14 months.
$50 x 14months = $700
<h3>
Answer: 40b - 16</h3>
Work Shown:
4(10b-4)
4*10b - 4*4
40b - 16
I multiplied the outer term 4 by each term inside. Refer to the distribution property (aka distributive property).
A rational number is a number that can be written in the form:

Where p and q are coprimes. We are asked for finite sets, we can rule out options 3 and 4. In the set in option 2 the first element is:

This number cannot be written a ratio. We can rule out option 2.
All the elements in the set from option 1 can be written in the form p/q.Thus, the answer is the first option.