In which of the following years did oil price movements contribute to holding down inflation?

If a shift in the demand curve that raises the price of oranges from $7 to $9 a bushel increases the quantity of oranges supplied from 4,000 bushels to 6,000 bushels, the

A) supply of oranges is elastic. B) supply of oranges is inelastic. C) demand for oranges is elastic. D) demand for oranges is inelastic.

Debbie makes porcelain plates in her home and sells them to the Opus gallery. She spent $400 last month on supplies and made 50 plates. She sold the plates to the gallery at $25 per plate. The gallery sells all the plates for $40 each

For all of the 50 plates, what is Debbie's total value added? For all the 50 plates, what is the gallery's total value added?