Acertain one-day seminar consisted of a morning session and an afternoon session. if each of the 128 people attending the seminar attended at least one of the two sessions, how many of the people attended the morning session only?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60