Nathan's rental costs for a 5-day trip are $234 in rental fees, plus 4 percent tax, plus $20 a day car insurance. what total did he pay for the rental? a. $214.36 b. $343.36 c. $263.36 d. $254

Your answer is going to be D

The correct answer is option B, $343.36
I came to the conclusion by multiplying the rental cost by the tax rate= 9.36 and then multiplying the daily insurance fee by the amount of days- 20*5=100 and then adding 234+9.36+100 which equals 343.36. The general formula for finding the total cost would be Rental charge+ +(rental)(tax rate)+(Insurance)(# of days) 

Hope this helps a bit