Virginia read r books last month and Ann read 3r - 5 bookes.
Instructions: Write in words each given algebraic expressions.Describe a possible domain for this variable.
The given algebraic expressions are:
1. Virginia read "r" books last month.
2. Ann read "3r - 5" books.
To describe a possible domain for the variable "r," we need to consider the limitations or constraints of the situation. In this case, the domain will depend on what makes sense in the context of the problem.
Let's analyze each expression separately and determine the potential domain for "r":
1. Virginia read "r" books last month.
It seems reasonable that the number of books Virginia read (r) should be a positive whole number or zero. So, the possible domain for "r" could be: r ≥ 0, where "≥" denotes "greater than or equal to."
2. Ann read "3r - 5" books.
Similar to the previous expression, we can determine a possible domain for "r." However, we need to consider that the expression "3r - 5" represents the number of books Ann read. Since we can't have a negative number of books read, we need to ensure that "3r - 5" is non-negative:
3r - 5 ≥ 0
3r ≥ 5
r ≥ 5/3
Therefore, the possible domain for "r" in this case would be: r ≥ 5/3.
In summary, the possible domains for the variable "r" in these expressions are:
1. r ≥ 0 (for Virginia's expression)
2. r ≥ 5/3 (for Ann's expression)