Answer:
D
Explanation:
started at 1 mile from house then 7mph -> 7x+1
2nd day they rode 10mph ->10x
To solve the equation 7x + 1 = 10x, we can subtract 7x from both sides to get:
1 = 3x
Dividing both sides by 3, we get:
x = 1/3
Therefore, the solution to the equation 7x + 1 = 10x is x = 1/3.
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