Frequency Needed?

Select # of days.
Discounts
Frequency 1 day per week discount 3%,
Frequency 2 day per week discount 5%,
Frequency 3 day per week discount 7%,
Frequency 4 day per week discount 9%,
Frequency 5 day per week discount 11%,
Frequency 6 day per week discount 13%,
Frequency 7 day per week discount 15%.