Josh earns money by washing cars in his neighborhood. He spent $215 on supplies and charges $15 for each car washed. Josh's profit, p, can be represented by the function p = 15n − 215, where n represents the number of cars that Josh washes. What is the minimum number of cars Josh must wash to make a profit?
Đề thi Olympic Tiếng Anh lớp 11 vòng 24 năm 2013 - 2014
Đề thi Olympic Tiếng Anh lớp 11 có đáp án
Đề thi Tiếng Anh qua mạng (IOE) lớp 11
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- Câu 1
- Câu 2
In the accompanying diagram, HK bisects IL and ∠H ≅ ∠K. What is the most direct method of proof that could be used to prove ΔHIJ ≅ ΔKLJ? - Câu 3
The original function y = 0.4x + 4 is graphed on the same grid as the new function y = 2.5x + 4. Which of the following statements about these graphs is true?
- Câu 4
The graph above shows the relationship between the value of a car in dollars and the age of the car in years. According to the graph, which of the following statements appears to be true? - Câu 5
If f(x) = x + 1 and g(x) = x2 – 1, the expression (g ° f)(x) equals 0 when x is equal to
- Câu 6
In the accompanying diagram of triangles BAT and FLU, ∠B ≅ ∠F and BA ≅ FL. Which statement is needed to prove ΔBAT ≅ ΔFLU? - Câu 7
The diameter of circle P is RT. The center of the circle, P, has coordinates (– 4, 1). The coordinates of point R are (2, –3). What are the coordinates of point T?
- Câu 8
The expression (16a6b4)1/4 is equivalent to
- Câu 9
What are the coordinates of the turning point of the parabola whose equation is y = −x2 + 4x + 1?
- Câu 10
Andrea draws PQ with endpoints P(4, –3) and Q(2, 6). She then draws PR so that it is perpendicular to PQ. What is the slope of PR?
