Question

If g(x) = 2[x] − 1, what is g(−2.3)?

A.-7
B.-5
C.-4
D.-3

Answer 1

\[\rm g(\color{ReD}{x})=2(\color{Red}{x})-1\]
\[\rm g(\color{red}{x}) \rightarrow g(\color{Red}{-2.3})\]
the number in parentheses represent the x value
x=-2.3 plugin the number into the equation for x and simplify