The two triangles are similar, What is the length of DE?

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Find the values of y: 3y^3(y^2+ 2/3y)=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