Answer:
A - the real answer is 7
Step-by-step explanation:
g²=49 (square root 49 to get 7)
B) not sure - possibly wrote the negative sign as a mistake
You are absolutely right.
Step-by-step explanation:

Answer:
d
Step-by-step explanation:
because its a whole number as in the square root is 4
Answer:
30000
Step-by-step explanation:
You round up because it is 5 or < making the 5 a 0 and the 2 a 3. Bringing in the extra 0's makes it 30,000