Intermediate Algebra (6th Edition)

$258$ miles
Formula: $19.95x + 0.12y$, where $x$ represents the number of days driven and $y$ represents every mile over $100$ miles driven per day. Substitute numbers from the question into the formula and solve for $y$. $19.95(2)+0.12y=46.86$ $39.90+0.12y=46.86$ $0.12y=6.96$ $y=58$ Since $y$ represents every mile over $100$ miles driven per day and Mr.Woo drove for $2$ days, Mr.Woo drove for $2(100) + 58$, or $258$ miles.