The value of the function, f(x) = 23.2x + 2.5, when x is at -4.2 is: f(-4.2) = -94.94.
Given the function, f(x) = 23.2x + 2.5, we are required to find the value of the function when x = -4.2.
Thus, substitute x = -4.2 into f(x) = 23.2x + 2.5
f(-4.2) = 23.2(-4.2) + 2.5
f(-4.2) = -97.44 + 2.5
f(-4.2) = -94.94
Therefore, the value of the function, f(x) = 23.2x + 2.5, when x is at -4.2 is: f(-4.2) = -94.94.
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