Answer:
D
Step-by-step explanation:
solve square root of 3x plus 1 = 4:
D is correct and results in 3x + 1 = 16; after this we subtract 1 from both sides and end up with 3x = 15, or x = 5.
I'm pretty sure the answer is exponent since it tells you how many times to multiply the number beside it by itself.
Example:

It is NOT 3 × 4 = 12
It is 3 × 3 × 3 × 3 = 9 × 3 × 3 = 9 × 9 = 81
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I hope that helps you out!!
Any more questions, please feel free to ask me and I will gladly help you out!!
~Zoey
Answer:
A solid figure whose bases or ends have the same size and shape and are parallel to one another, and each of whose sides is a parallelogram.
Step-by-step explanation:
Answer: y
Step-by-step explanation: