Answer:
3(z+3) = 3z + 9 if thats what your asking
Step-by-step explanation:

When 0 is in the numerator, then the whole fraction becomes equal to 0.
However if 0 is in the denominator, then it is undefined.
Answer:
n=4
Step-by-step explanation:
7n-3n=16
4n=16
n=16/4
n=4
Answer:
I think Jenny will be able to do 9 pillows with the lace trim.
Answer:
Both Wolverine and James Bond will have paid the same amount after 10 months.
Step-by-step explanation:
Let x denotes the number of months after which both Wolverine and James Bond will have paid the same amount.
As Wolverine makes a $1000 down payment for a motorcycle and then pays $300 per month,
Amount paid by Wolverine in x months is equal to 
As James Bond makes a $2500 down payment for a motorcycle and then pays $150 per month,
Amount paid by James Bond in x months is equal to 
To find number of months after which both Wolverine and James Bond will have paid the same amount,
solve 

So, both Wolverine and James Bond will have paid the same amount after 10 months.