The anwser is A all you have to do is plug in 48 for n then solve it
Answer:

Step-by-step explanation:
1) Rewrite
in the form
, where a = y and b = 1.

2) Use Square of Difference:
.

3) Factor
.
1 - Ask: Which two numbers add up to 6 and multiply to -7?
-1 and 7
2 - Rewrite the expression using the above.

Outcome/Result: 
4) Rewrite the expression with a common denominator.

5) Expand.

6) Collect like terms.

7) Simplify
to 

g mowed 5 lawns and earned $150
Hello,
I still say it is not my cup of tea.(I hate tea)
3*4*1/5+2*1/2*1=17/5=3.4
Answer D