Barrett is ordering t-shirts for his school’s student council. Company D charges a $30 design fee plus $6.25 per t-shirt. Company E charges a $12 design fee plus $9.75 per t-shirt. Which inequality can be used to find x, the minimum number of t- shirts that can be ordered so that the total cost with Company D is less than the total cost with Company E?
a. 6.25x + 30 > 9.75x + 12b. 6.25x + 30 < 9.75x + 12c. 6.25 + 30x > 9.75 + 12xd. 6.25 + 30x < 9.75 + 12x