To determine which expression represents Bella's score on a spelling test if she studies for 3 hours, let's follow a logical approach step by step.
1. Identify the Variable and Function:
Bella's spelling test score is defined as a function of the number of hours she studies. Typically, we represent a function with a name (e.g., Score), and it takes an input which is the independent variable (in this case, the number of hours studied).
2. Input into the Function:
Since we are interested in Bella's score specifically when she studies for 3 hours, we need to substitute the variable (the number of hours studied) with the value 3 in the function.
3. Interpreting The Function Notation:
In function notation, if we have a function named Score and we want to find the result of the function when the input is 3, we write this as Score(3).
4. Examine the Options:
- Option A: 3-score suggests subtracting some value named 'score' from 3, which does not match our requirement.
- Option B: 3(score) implies multiplying 3 by some value named 'score', which also does not represent the function notation.
- Option C: Score + 3 suggests adding 3 to some base score value, which again is not about substituting the function input.
- Option D: Score(3) correctly indicates we are evaluating the function Score with an input value of 3.
Based on this logical analysis, the expression that correctly represents Bella's score on a spelling test when she studies for 3 hours is given by:
Choice D: Score(3)
