Answer:
C. ±square root of 30
Step-by-step explanation:
Apply the square root function to both sides of the equation:

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The absolute value equation has two solutions. They match choice C.
Please answer please please thank you thank goodness
There is no mode in these scores.
This is because mode is when two numbers show up the same like 4 and 4.
Answer:
see explanation
Step-by-step explanation:
(a)
4 × 4 = 4²
(b)
5 × 5 × 5 × 5 = 
(c)
3 × 7 × 7 × 7 × 7 = 3 × 
(d)
2 × 9 × 9 × 9 × 2 × 9 ← rearrange
= 2 × 2 × 9 × 9 × 9 × 9
= 2² × 