Answer: C. 4:1
If we double all the lengths, the area increase by a factor of 2².
It could be C or D but a salary is a fixed payment that is USUALLY on a yearly payment. I would answer D
1. -1/3 - (-1/2) = .16666666666666
2. -8
Hope it helps, if you need it in fractions, you can always convert it :)
Answer:

Step-by-step explanation:
Given

Solving (a): Possible union elements
This is the represented by element with the largest number of the sets
i.e.

Solving (b): Possible intersection elements
This is the represented by element with the least number of the sets
i.e.

To answer this question, we have the start-up costs of $ 52,000
A monthly inflation of $ 0 is assumed
Operating costs are $680
The daily gain is $960
For the Part A.
The inequality that this situation represents

So:

Where d represents the number of days.
For the Part B.
To start earning, you must replace all the initial investment and cover the expenses per day. The time that must pass for this to happen is obtained by clearing "d" from the inequality.

d> 185.71 days
Then, the sum of the net profits will be greater than the initial investment after 186 days of starting the business.