just look up math papa algebra calculator it gives you the answer and explains it step by step :)
Answer:
Your answer is 71
Step-by-step explanation:
7+2(n-1)
we have our n as 8
so,7+2(8-1)
9(7)=63
So, when we're tasked with things like this, rewriting everything in terms of sine and cosine and combining fractions often trivializes things, so doing just that gives us:

So out expression is 1/cos(x).
You just take the difference between them and the answer is 1 3/5
the answer is 60000 to the nearest 1000