Answer:
3.) 8x + 1
Step-by-step explanation:
The perimeter is the distance around a figure. It can be found by adding the lengths of all the sides in the figure. It is given that the side lengths of the given triangle are;
3x
2x - 1
3x + 2
Now all one has to do is add up these lengths, combine like terms;
(3x) + (2x - 1) + (3x + 2)
= 8x + 1
