PLEASE PLEASE HELPJeans are on sale for 40% off. The jeans Justin wants to buy are marked with an original price of $80. What is the Total cost, in dollars, for a pair of jeans at the sale price, including a 7% tax?

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

What are the soultion(s) to the quadratic equation 40- x^2=0

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