Duke and donna each have 10 coins. all coins are either dimes or quarters. duke has 5 quarters. donna has 60 c more than duke. how many quarters does donna have?

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

1foot = 12 inches; 1 yard = 3 feet

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.