Final answer:
To determine how many miles Lissette biked, we can use the given information: Shane biked 1 mile less than three times the number of miles Lissette biked, and Shane biked a total of 7 miles. By setting up and solving an equation, we find that Lissette biked approximately 2.67 miles.
Step-by-step explanation:
To determine how many miles Lissette biked, we can use the given information:
- Shane biked 1 mile less than three times the number of miles Lissette biked.
- Shane biked a total of 7 miles.
Let's represent the number of miles Lissette biked with the variable 'x'.
According to the given information, Shane biked 1 mile less than three times Lissette's number of miles. So, we can write the equation as:
3x - 1 = 7
Now, we can solve the equation to find the value of 'x', which represents the number of miles Lissette biked.
To solve the equation, we can add 1 to both sides:
3x = 8
Then, we divide both sides by 3 to isolate 'x':
x = 8/3
Therefore, Lissette biked approximately 2.67 miles.