Proof of induction that a polygon win n sides will have n vertices where n is a natural number with n>2 plss help

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

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?