I need to find the slope of each line

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

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?