Anika gave Meena 7 Cherries. Meena has 6 then Anika gives her 7 which adds up to 13.
Answer:

Step-by-step explanation:
-Given that 
-We determine the z-value corresponding to the 95% confidence level:

-The margin of error is the degree of error from the real value and is calculated as follows:

Hence, the margin of error is 
Answer:
Multiply the first equation by 4.
Step-by-step explanation:
4(x+y=3) which gives
4x+4y=12
and
4x-y=7
Then subtract the two equations and the x variable will be eliminated.
Answer:
Yeah and i don't know how to answer that sorry
Step-by-step explanation:
you can't look it up some how?