Suppose gasoline costs $2.29 per gallon in Buffalo, New York and $0.91 per liter in Toronto, Canada. There are 3.8 liters in one gallon.

1. How much does one gallon of gas cost in Toronto? Round your answer to the nearest cent.
2. Is the cost of gas greater in Buffalo or in Toronto? How much greater?

Calculate each sum or difference.

Find the value of  using any method.

Find the area of the shaded region. All angles are right angles. Show your reasoning.

A multi-sided figure. The sides on top measure 10 units, 35 units, and 15 units. Two of the three sides on the left measure 10 units. One of the two sides on the right measures 10 units. One of the two sides on the bottom measure 15 units. The total width of the figure is 60 units, and the total height is 30 units. All angles are right angles.

1. Priya finds \((1.05) \boldcdot (2.8)\) by calculating \(105 \boldcdot 28\), then moving the digits three places to the right. Why does Priya’s method make sense?

2. Use Priya’s method to calculate \((1.05) \boldsymbol \boldcdot (2.8)\). You can use the fact that \(105 \boldcdot 28 = 2,\!940\).
3. Use Priya’s method to calculate \((0.0015) \boldcdot (0.024)\).