Evaluate 4x^2-12x+5 at x=6. A. 67 B. 77 C. 105 D. 221
1 answer:
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Answer:
Step-by-step explanation:
4). This is an exponential function.
5). Let the equation of this function is,
f(x) = a(b)ˣ
Since, two points (-1, 4) and (0, 6) are lying on the graph of the function,
For (-1, 4),
4 = a(b)⁻¹
4 = --------(1)
For (0, 6),
6 = a(b)⁰
a = 6
From equation (1),
4 =
b = = 1.5
Therefore, equation of the function will be,
f(x) = 6(1.5)ˣ
6). Now the value of f(-4) will be,
f(-4) = 6(1.5)⁻⁴
= 1.185