Is my answer right?: 2 - 18b - 11 - 4b = -9 - 22b

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

Acircle has a circumference of 7.850 units. what is its radius?

Which of the following represents the factorization of the trinomial below? x^2+7x-30