Question

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Answer 1

$1.50 and 4.5 miles

Explanation:

The constant of proportionality is basically just the slope of a line on a graph

Slope can be found by:

`\frac {y_(2) - y_(1)} {x_(2) - x_(1)}`

10.50 - 7.50 = 3

7 - 5 = 2

3/2 = 1.50 = $1.50

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135 miles / 30 days = 4.5 miles per day