What is the first 5 terms of the sequence t(n) = 2n + 5

To find the first five terms of the sequence, you must plug the values of each sequence number into the sequence.

For the first term, you plug in the number 1 in place of n. This would look like this:
T(1)=2(1)+5
T(1)=7

For the second term, you plug in the number 2 in place of n:
T(2)=2(2)+5
T(2)=9

For the third term, plug in 3:
T(3)=2(3)+5
T(3)=11

For the fourth term, plug in 4:
T(4)=2(4)+5
T(4)=13

And finally, for the fifth term, plug in 5:
T(5)=2(5)+5
T(5)=15

Therefore, your final answers for the first five terms of the sequence are 
7, 9, 11, 13, and 15

Hope this helps!