Answer
4 days
Work Step by Step
Step 1) 25d + 0.30(14)(d) = 116.80 ... $25 per day, plus 0.30 per mile, and you drive 14 miles everyday, your total cost will be 116.80
Step 2) 25d + 4.2d = 116.80 ... Multiply 0.30 by 14
Step 3) 29.2d = 116.80 ... Combine like terms
Step 4) d=4 ... Divide 116.80 by 29.2
Step 5) 4 days ... Final Answer