Answer:8498
Step-by-step explanation:
(7*1000)+(7*200)+(7*10)+(7*4)
7000+1400+70+28
8498
Answer:

Step-by-step explanation:







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Each of the 4 friends spent 15 dollars so all you need to do is multiply 4 by 15. 4x15=60
Alright.
So, we have 2185 student in Rose.
Lily School has 307 more students than Rose, so Lily has,
2185 + 307 = 2492 Students in Lily School.
Since question a. is asking you to round off to the nearest ten, your answer to part a is 2490.
For part b. add 2185 and 2490.
2185 + 2490 = 4675 students.
The questions want you to round to the nearest hundredth, so,
4700 is the answer to part b.
ANSWER
The correct answer is option B
EXPLANATION
The equations are

and

When we multiply the second equation by
, we obtain;

When we combine this new equation with equation (1).

We can see that
has been eliminated from the equation.
We can then, solve for
and then substitute the result in to any of the equations to find
.
Hence the correct answer is option B