Answer:
2
-4
0
Step-by-step explanation:
Just did it
Answer:
No, he is not correct because the constant in his answer should have been 21 not 7.
Step-by-step explanation:

Therefore, the correct answer is the fourth; he should have put 21.
Answer:
It would take him 3 minutes
Step-by-step explanation:
15 x 3 = 45
Answer: 276 is 300% of 92.
Explanation: 279 is 3x of 92. 92x3 =279 3= 3.00 -> 300%
Hope this helps