Find a formula for an arithmetic sequence that begins
12 14 16 18
5' 5'
5.5
16
= 2 + 12 (n = 1)
o
a.
n
2n
Ob. en=2+
5
10
+ 2n
O
نا
5
Oden
12
5
+
2.
n
5

Sara bought a pair of pants that were on sale for 30 percent off of the original price. if the original price of the pants was $29, what was the sales price of the pants?

How to do this , and can some one explain

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?