Đề thi Olympic Tiếng Anh lớp 11 vòng 3 năm 2013 - 2014

Which expression is equivalent to the expression above if no denominators equal zero?

The daily high temperatures in degrees Fahrenheit (°F) in Chattanooga Tennesseefor two 1-week periods are listed above. What is the interquartile range for these data over the two weeks?

A grocery store manager wants to determine how many servings of fresh fruit her adult customers eat per day. She randomly surveys adult customers in the produce aisle of her store about their eating habits. Which statement best explains why her survey could be biased?

Jen and Barry's ice cream stand has three types of cones, six flavors of ice cream, and four kinds of sprinkles. If a serving consists of a cone, one flavor of ice cream, and one kind of sprinkles, how many different servings are possible?

What is the range of the equation: y = -|x - 8| + 3?

Super Painters charges $1.00 per square foot plus an additional fee of $25.00 to paint a living room. If x represents the area of the walls of Francesca's living room, in square feet, and y represents the cost, in dollars, which graph best represents the cost of painting her living room?

The population growth of Boomtown is shown in the accompanying graph. If the same pattern of population growth continues, what will the population of Boomtown be in the year 2020?

A company analyzes wind patterns to determine whether to install windmills in Kingsport, Tennessee, to generate electricity. The graph above shows the average monthly wind speeds in Kingsport over a two-year period. A function describing this graph is a transformation of the parent sine function y = sinx. Which value is closest to the amplitude of this transformed function?

If a + 3b = 13 and a + b = 5, the value of b is

What is the value of the expression above?