Answer: The answer is D
Step-by-step explanation: 12x means 12 times x, which means her age is 12 times her brother's age.
1 because 1^4-25=-24 which is negative(so below the x-axis)
You can take LCM and then can add to see what's the sum.
The sum result of given expressions is given by: 
<h2>Given that:</h2>
- To find sum of
and 
<h2>Finding LCM and summing:</h2>
You can take LCM and then can add to see whats the sum.
Thus, the sum of given expressions is given by:
Learn more about algebraic sums here:
brainly.com/question/14964662
Answer:
b) $49
Step-by-step explanation:
The question here is not if Alexis can mow the lawn faster or slower than the person who hires (actually, the time that the person hired took to mow the lawn is irrelevant).
The important part is the time Alexis can save hiring someone:
- Alexis mow her lawn in 30 minutes.
- Alexis earns $100 an hour. Then 30 minutes of her time is worthy $50.
Then, paying $50 or less is a good choice for Alexis.
Therefore the answer is b) $49.
