A function is created to represent the costs of living per person in the family. What restrictions would be made to the domain?
A-domain includes positive integers
B- domain includes positive numbers
C-domain includes all real numbers
D- domain includes integers.
I am not sure whether it is A or B.
you do not have either + or - 3.57 people
To determine the restrictions on the domain of a function that represents the costs of living per person in a family, you need to consider the context of the problem and any practical constraints that may exist.
In this case, since the function represents the costs of living per person, it is reasonable to assume that the costs are measured in some form of currency.
Positive integers (Option A) would be an appropriate choice for the domain if the costs are measured in whole units of currency (e.g., dollars, euros, etc.) and fractional amounts are not allowed. For example, if the function represents costs in dollars and the cost per person is $10, $15, or $20, then positive integers would be a valid domain.
Positive numbers (Option B) would be more appropriate if the costs per person are allowed to have fractional amounts, such as $9.99 or $14.50. If the function allows for decimal or fractional values, then positive numbers would be a valid domain.
Since the costs of living can realistically be measured in decimal or fractional units, it is generally more appropriate to choose option B: the domain includes positive numbers.
Therefore, the correct answer is B - the domain includes positive numbers.
To determine the restrictions on the domain of the function representing the costs of living per person in the family, we need to consider the context of the problem and the type of values that are practical and meaningful in this situation.
If the costs of living per person can only be measured in whole numbers (i.e., positive integers), then the domain of the function would indeed be restricted to positive integers.
On the other hand, if the costs of living per person can be measured in non-whole numbers (i.e., positive numbers including decimal values), then the domain of the function would be restricted to positive numbers.
Since we don't have enough information about the context of the problem, it is not possible to determine definitively whether the domain should be A (positive integers) or B (positive numbers).