2x - 7 = 26 is the required equation representing the word problem
Third option is correct
What is linear equation?
At first it is important to know about equation
Equation shows the equality between two algebraic expressions by connecting the two algebraic expressions by an equal to sign.
A one degree equation is known as linear equation.
Here
Let the number of miles Mary ran this week be x miles
Mary ran 7 miles less than twice the amount of miles she ran last week
Distance ran by Mary this week = 2x -7
By the problem,
2x - 7 = 26
This is the required equation representing the word problem
Third option is correct
To learn more about Linear equation, refer to the link:
brainly.com/question/2030026
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