Answer:

Step-by-step explanation:
The given sequence is 2, 4, 6, ....
We need to write an explicit formula for
. The firts term is 2, second term is 4 and third term is 6 and so on.
Each term is 2 greater than the term before it. Thus we can write it as follows :

Where
n = 1,2,3....
Hence, the explicit formula is
.
Quadrant IV
Step-by-step explanation:
Use the mnemonics CAST.
The Cosine ratio and its reciprocal are positive in the fourth quadrant.
All the other trigonometric ratios are negative in the fourth quadrant.
Percent of increase formula: new-original/original
so, 60-50=10
10/50 = x/100
therefore x equals 20 so 20%
Answer: 1
Step-by-step explanation:
So first isolate x
subtract 8 to both sides to make -x > -2
Flip the signs to make x<2
The only x value less than 2 is 1
Answer is 1