Determine whether f is a linear function. If f is linear, give the values for m and b so that f may be expressed as 
.f(x) = 3.8 - 5.7x
A. Linear; m = 5.7, b = -3.8
B. Nonlinear
C. Linear; m = 3.8, b = -5.7
D. Linear; m = -5.7, b = 3.8
Answer: D
Mathematics
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