Answer:
v= -62
Step-by-step explanation:
<h3>
Answer: 
</h3>
3*sqrt(7)
3 times the square root of 7
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Explanation:
I'm assuming the V stands for square root. You can write sqrt(63).

The idea is to factor 63 in such a way that one factor is the largest perfect square possible, that way we can pull the root apart to simplify as shown above. The rule I used for the second step is 
Answer:
(3,-8)
Step-by-step explanation:
Answer:
9.43398113206...
Step-by-step explanation:
Tanya put on 0.64 oz of frosting on each cupcake.