Answer:
No, he is incorrect because he forgot to multiple the negative by the x, and only multiplied 3 by x instead of -3 by x.
Step-by-step explanation:
The correct re-write of this expression is:
-3x - 30
Answer:
I believe that A is the correct answer.
Step-by-step explanation:
Answer:
12546
Step-by-step explanation:
9.5% = 0.95 = 95
12,640 - 95 = 12546
One expression u can use is 900÷30
Round 868 up to 900
and round 29 up is 30
Step-by-step explanation:
I can only answer part 2 of your question, "If we multiply two positive numbers, is the result positive or negative?". if you multiply 2 positive numbers your answer would be positive.