<span><span>The sum of a squared and b is given by

</span>7 times the sum of a squared and b is given by
</span><span>
while 4 times the sum of a squared and b is given by
</span>

Therefore, <span>7 times the sum of a squared and b minus 4 times the sum of a squared and b is given by

</span>
First isolate the power of 10 on the right side by dividing both sides by 5:

Now you're free to take the logarithm and simplify where you can:

Then solve for
:

Answer:
-1.5
Step-by-step explanation:
To solve for this we will follow PEMDAS to arrive at the correct answer so we have the following:

Based on calculations the correct answer is A
I believe the slope is 0 because it they are both horizontal lines? I may be wrong though.