Help with maths please

Me asap! what is the slope of this line? enter your answer in the box.

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

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?