Question 143621
I am not sure if this is trig but the question is 
T<sub>n</sub> = 2n + 3
write the first five terms of the sequence
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No it's not trig.

It means to replace n by 1, then by 2, then by 3, then by 4, then by 5.

T<sub>n</sub> = 2n+3

Replacing n by 1:

T<sub>1</sub> = 2(1)+3 = 2+3 = 5

Replacing n by 2:

T<sub>2</sub> = 2(2)+3 = 4+3 = 7

Replacing n by 3:

T<sub>3</sub> = 2(3)+3 = 6+3 = 9

Replacing n by 4:

T<sub>4</sub> = 2(4)+3 = 8+3 = 11

Replacing n by 5:

T<sub>5</sub> = 2(5)+3 = 10+3 = 13

and the sequence is

T<sub>1</sub>, T<sub>2</sub>, T<sub>3</sub>, T<sub>4</sub>, T<sub>5</sub>

or  5, 7, 9, 11, 14

Edwin</pre>