Question

If g(x) = 2 − 1, what is g(−2.3)?
A) -7
B) -5
C) -4
D) -3

Answer 1

-5.6

Explanation:

Let the given function be g(x) = 2x - 1

To get g(-2.3), you will substitute x = -2.3 into the expression as shown;

g(x) = 2x - 1

g(-2.3) = 2(-2.3) - 1

g(-2.3) = -4.6 - 1

g(-2.3) = -5.6

Hence the value is -5.6

Note that the function was assumed. Same procedure can be applies for any function g(x).