Answer:

Step-by-step explanation:
Given: Perimeter of triangle= 72 units
Measure of one of the side= x units
Measure of second side = 3x units
We know the perimeter of triangle is equal to sum of all sides.
Now, finding the possible value of x
forming an inequality to determine the value of x
Remember triangle has three sides, however, measure of only two sides are given.
⇒ 
⇒ 
Dividing both side by 4
⇒ 
∴ The inequality to represents all possible values of x is 
Answer:
A) 81 minutes
Step-by-step explanation:
1·2 = 2
2·2 = 4
4·2 = 8
8·2 = 16
16·2 = 32
32·2 = 64
64·2 = 128
128·2= 256
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