Answer:
Market survey
Explanation:
For Donna to open a new business in which she will be successful and very profitable she needs to know what problem/need her new business/product can solve in the society. this is very important to know before engaging in any form of business because businesses that solve problem/needs of its community tend to strive better even in a bad economy.
The best marketing strategy to determine this need/want is called Market survey. this survey can be carried out by creating a one page questionnaire about her intended product and post/send it to the relevant audience for appropriate feedback and also to professionals in her intended product. the feedback she gets from the questionnaire will help inform her on the best product to sell.
It depends on the contract. But it's mostly what seller do ...
Answer: 2,200 units.
Explanation:
The complete exercise is:

A manufacturer shipped units of a certain product to two locations. The equation above shows the total shipping cost T, in dollars, for shipping c units to the closer location and shipping f units to the farther location. If the total shipping cost was $47,000 and 3,000 units were shipped to the farther location, how many units were shipped to the closer location?
Given the following equation:

You know that "T" is the total shipping cost (in dollars), "c" is the number of units shipped to the closer location and "f" is the number of units shipped to the farther location.
Based on the information given in the exercise, you can identify that, in this case:

Then, knowing those values, you need to substitute them into the given equation:

And finally, you must solve for "c" in order to calculate the number of units that were shipped to the closer location.
You get that this is:
