Exercise 7-34 (Algo) (L07-4) The cost per Item at a supermarket follows en exponentlel dlstrlbutlom There ere many Inexpenslve Items end a few relatlvely expenslve ones The mean cost per Item Is $12.5 What Is the percentage of Items that cost: a. Less than Sg.5? (Round your ansvverto 4 declmel places.) b. More than $13_5? (Round your answer to 4 declmal places.) c. Between $105 and S125? (Round your answer to 4 declmel places.) d. Flnd the 60th percentlle_ Four)' percent of the supermarket Ilems cost more than what amount? (Round your answer to 2 declmel places.)