I hope it helped youuuuuu
Answer:
18
Step-by-step explanation:
6 x 3 = 18
D because a has to be younger than 18 and it has to be positive because we are never a negative age. do you understand when i mean?
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Answer:

Step-by-step explanation:
The equation to solve is:

To get rid of the "square", we need to take square root of both sides:

Then we use algebra to find the value(s) of x. Remember, when we take square root, we have to add up a "+-" (on the right side). Shown below:

So these are 2 answers for x.