What does will be means in math problems?

Answer 1

In maths problems, the term "will be" is generally used when you are expected to make a prediction about something (although the "prediction" has to be justified absolutely by maths to back it up. Generally you do the maths, get an answer, use this as your "prediction", then the maths backs it up. As opposed to "predicting" (ie. guessing), then doing the maths, since the maths is unlikely to justify the prediction when done this way around).

e.g If you are given a formula which is the growth rate of a country, and asked "How many people will be living in this country in 10 years time?" Clearly, this is a "prediction", in the sense that the formula used to calculate this will be a modelled approximation of "growth rate" (since this is not something that is possible to model perfectly, mathematically, due to the many variables influencing it). However you should be able to substitue the "10" into the required place in the formula, and work out the what the expected answer is. The answer becomes your "prediction" and the working is your mathematical justification for what your "prediction".