Plz can you me with this question? include good details in how you did it!

Write the sentence as an equation. b increased by 281 is d

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

Let x = a + bi and y = c + di and z = f + gi. which statements are true?