I think it's 81, but not quite sure.
<span>All real numbers at most –9.5 or at least 5.5 is given by

or

</span>
Answer:
i just know you have to use the second equation
Step-by-step explanation:
Question 1:
For this case we must rewrite the following equation:

If we add 3x to both sides of the equation we have:

Thus, we have that an equivalent expression is option C.
Answer:
Option C

Question 2:
For this case we must solve the following equation:

Subtracting 5 from both sides of the equation we have:

Dividing between -5 on both sides of the equation we have:

Answer:
Option B