which algebraic expression represents tamara age if she is 7 years younger than her sister? Assume her sister's age is a.
A. a-7
B. a+7
C. 7-a
D. 7a
I think the answer is c.
Nope.
That expression says that her sister is younger than Tamara.
is a the answer.
Yes.
a-7
To determine which algebraic expression represents Tamara's age if she is 7 years younger than her sister, we need to analyze the given information.
The statement "Tamara is 7 years younger than her sister" implies that Tamara's age can be represented by subtracting 7 from her sister's age.
Let's evaluate each option:
A. a - 7: This expression represents Tamara's age if it is 7 less than her sister's age, which matches the given information.
B. a + 7: This expression represents Tamara's age if it is 7 more than her sister's age, which contradicts the given information.
C. 7 - a: This expression represents the difference between Tamara's age and her sister's age, which does not match the given information.
D. 7a: This expression represents the product of 7 and an unknown quantity 'a,' which is not relevant to the given information.
Given the analysis above, the correct answer is A. a - 7 because it represents Tamara's age as 7 less than her sister's age.