Write 160,000,000 in exponential form

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

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

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)