Which equation represents a line that passes through point (0,8) and is parallel to the line shown in the graph?
2 answers:
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Answer:
The correct option is C.
Step-by-step explanation:
The function has axis of symmetry at , it represents that the parabola is along the x-axis and the standard form of parabola is
Where, a is scale factor and (h,k) is vertex.
The maximum or minimum value of a quadratic function is the vertex of parabola. So, vertex of parabola is (6,4).
The y-intercept of the function is (0,-32)
Therefore required equation of parabola is
Therefore option C is correct.
Answer:
Step-by-step explanation:
Decreasing rate = 12% = 0.12
y = 2400 * (1- 0.12)^x = 2400*(0.88)^x
x = 8 years