Answer:
Alex can use a less formal style, does not have to explain the background in detail, and should get to the point quickly.
Step-by-step explanation:
When you’re in the process of writing a paper or a report, it’s important not to fotrget the information you are actually passing on. Whether you’ve thought about it consciously or not, you always write to an audience: sometimes your audience is a very generalized group of readers, sometimes you know the individuals who compose the audience, and sometimes you write for yourself. Keeping your audience in mind while you write can help you make good decisions about what material to include, how to organize your ideas, and how best to support your argument.
Alex should use a less formal style, does not have to explain the background in detail, and should get to the point quickly since he's writing to his coworkers and they are eager to see if the idea they have been discussing is affordable