Answer:
<h2>135</h2>
Step-by-step explanation:

For this case we have by definition, that the perimeter of the figure will be given by the sum of its sides, that is:

We add similar terms:

Thus, the correct option is option b. That is, 
Answer:

Answer: I believe the race is 8/8 long
Step-by-step explanation: Because the race is 1/4 long and 1/4 is 1/8 mile the entire race is 8/8 miles
Step-by-step explanation:

X= 3
Steps:
10•3+1= 31
12•3-5=31