Câu 2: Khẳng định nào sau đây là đúng về hàm số 4 2 y x 4x 2   
:
A. Đồng biến trên (0; +∞) B. Nghịch biến trên tập xác định
C. Đồng biến trên TXĐ D. Đồng biến trên (-∞; 0)

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?

Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?