a)
V=p+prt
now we solve for P
V=P (1+rt)
Divide both sides by (1+rt)
P=V÷(1+rt)...answer
b)
P=V÷(1+rt)
P=3,000÷(1+0.06×5)
P=2,307.69
Answer:

And we can use the normal standard table and the complement rule and we got:

And the best answer would be:
C 0.07
Step-by-step explanation:
Let X the random variable who represent the amount of soda filled in large bottles and we know this:

And we want to find this probability:

And for this case we can use the z score formula given by:

And replacing we got:

And we can use the normal standard table and the complement rule and we got:

And the best answer would be:
C 0.07
1.5kg is 1500 grams.
Maria uses 50g a day, so to know how many days takes eating the whole packet just divide 1500 by 50.