Use the situation to answer the question.

Question

The sides of a triangle are represented by
(
3
s
−
1
)
,
(
2
s
+
5
)
,
and
(
s
+
4
)
.

What will the perimeter be if
s
=
7
?

61

50

56

45

Answer 1

First, substitute \(s = 7\) into the expressions for the sides of the triangle:

\(3(7) - 1 = 20\)

\(2(7) + 5 = 19\)

\(7 + 4 = 11\)

Now, add up the three sides to find the perimeter:

\(20 + 19 + 11 = 50\)

Therefore, the perimeter will be 50 if \(s = 7\). The correct answer is 50.