What is the domain of the step function f(x) = ⌈2x⌉ – 1?
-{x| x ≥ –1}
-{x| x ≥ 1}
-{x| x is an integer}
-{x| x is a real number}

What term best describes a line ans a point that lie in the same plane

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

What is the lcm of 16 and 40 ? 24 and 40 ?