Jamal's parents give him $20 to spend at camp . Jamal spends the same amount of money on snacks each day . After 4 days he has $12 left . What rate is Jamal spending money ? Calculate the slope using the formula

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