The equation to determine how many miles Lissette biked is Option (A) 7 = 3x - 1.
Let the total number of miles Lissette biked be x miles.
Given that Shane biked 1 mile less than three times the number of miles Lissette biked.
Therefore we have the expression of number of miles Shane biked which is = 3x - 1.
Also given that Shane biked a total of 7 miles.
We have , 7 = 3x - 1 .
Solving the value of x we get the number of miles Lissette biked.
Thus the equation to determine how many miles Lissette biked is Option (A) 7 = 3x - 1.
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