To analyze the situation, let's first summarize the information we have:
- Leena consumes 400 calories at breakfast.
- She consumes 350 calories at lunch.
- She consumes
of her daily calories at dinner, which we denote as (the calories consumed at dinner).
Now we can calculate the total daily calorie consumption:
If she consumes
This leads to the equation:
By solving this equation, we can find the value of
Now let's evaluate the provided statements:
-
Leena consumed 1,500 calories at dinner.
- This is not true, as we will find out
doesn't equal 1,500.
- This is not true, as we will find out
-
The equation
can be used to model the situation.- This equation is incorrect in its form because it does not correctly represent the relationship. The left side should equal the total calories, not just
.
- This equation is incorrect in its form because it does not correctly represent the relationship. The left side should equal the total calories, not just
-
Leena consumed 500 calories at dinner.
- We will find
to see if this is true. This might be a possible value, but we need to calculate it first.
- We will find
-
The equation
can be used to model the situation.- This equation is incorrect, as it misrepresents the relationship between the daily total calories and dinner.
-
Leena consumed 1,000 calories at dinner.
- Again, we need to calculate the value of
to verify.
- Again, we need to calculate the value of
-
The equation
can be used to model the situation.- This equation is incorrectly modeled; it introduces
incorrectly on both sides.
- This equation is incorrectly modeled; it introduces
Now calculating
-
Start with the equation we derived before:
Simplifying:
Rearranging gives:
Simplifying the left side:
This indicates that she consumed 1,500 calories at dinner.
Now let's summarize the statements once again with our
- Leena consumed 1,500 calories at dinner. (True)
- The equation
can be used to model the situation. (False) - Leena consumed 500 calories at dinner. (False)
- The equation
can be used to model the situation. (False) - Leena consumed 1,000 calories at dinner. (False)
- The equation
can be used to model the situation. (False)
So, the only statement that is true is the first:
- Leena consumed 1,500 calories at dinner.