Đề thi Olympic Tiếng Anh lớp 11 vòng 28 năm 2013 - 2014

Solve for x: 6x + 5 = – x + 40.

The graph above shows the 2004 average yearly earnings of people at least 18 years old according to the highest degree they have earned. According to the graph, which of the following statements is true?

Simplify: 3x² + 4x – 7 – x² – 2x + 3.

David wants to spread wildflower seeds in a rectangular field that is 60 feet wide and 70 feet long. Each package of wildflower seeds covers about 175 square feet and costs $6.95. Which of the following amounts is closest to the total cost of the wildflower seeds David needs for this field?

The Booster Club has a goal of raising at least $500. It has already raised $100. The club is sponsoring a pancake breakfast and charging $5.00 per ticket. Which inequality represents the number of tickets (t) that the club must sell to meet its goal?

The table shows values for the independent and dependent quantities in a functional relationship. Which function best represents this relationship?

If f(x) = 2x³ – 2, what is the value of f(2)?

Which graph best represents the function y = 0.8x + 1.4?

Which set of data can be represented by a straight line?

Tyler wants to buy a video-game system for $375. He can pay for the system in 12 months if he pays $75 now and $25 each month. How will the number of monthly payments be affected if Tyler pays $75 now and $30 each month?