How do you define a variable and write an algebraic expression for the phrase: 3 increased by a number?

Answer 1

Avery Alexander

Depends on context:

Let...... be the variable (you can choose whatever you want).

This variable may fit into a specific range of number types or have defined bounds.

It is possible to state "There is a number n such that..."

or you could write:#" "{n, n in R}#

In the more straightforward situation

Let the variable be n such that #n>0# and that #3+n#......... and whatever follows. Perhaps "increases".

In order for it to "increase" 3 when added, n must be positive.

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Answer 2

Savannah Anderson

To define a variable for the phrase "3 increased by a number," we can represent the unknown number by a letter, typically denoted as (x). Then, we can write the algebraic expression as (3 + x).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.