On April 1, the price of gas at Bob's Corner Station was $3.40 per gallon. On May 1, the price was $3.90 per gallon. On June 1, it was back down to $3.40 per gallon.

Between April 1 and May 1, Bob's price increased by$ ?, or % ?.

Between May 1 and June 1, Bob's price decreased by $ ? , or %? .

Suppose that at a gas station across the street, prices are always 20% higher than Bob's. In absolute dollar terms, the difference between Bob's prices and the prices across the street is (greater? or smaller?) when gas costs $3.90 than when gas costs $3.40.

Some economists blame high commodity prices (including the price of gas) on interest rates being too low.

Suppose the Fed raises the target for the federal funds rate from 2% to 2.5%. This change of % ? percentage points means that the Fed raised its target by approximately % ? .