What is the slope of a line that is a parallel to the y-axis? a) 0 b) 1 c) -1 d) undefined

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?