What is the domain of the function f(x) = va? all real numbers
all real numbers less than 0
all real number less than or equal to 0
all real numbers greater than or equal to 0

Two lines that do not intersect are skew. always sometimes or never

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median amount spent? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

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