A train has an average speed of 18 miles per hour. How long will it take to travel 270 miles?
2 answers:
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Answer:
See below and attachment
Step-by-step explanation:
<u>Given function:</u>
- y = -2(x - 3)² + 4
<em>The graph is attached and the axis of symmetry and all the required points plotted </em>
a) Axis of symmetry:
- x = 3
b) It has no minimum as the leading coefficient is negative.
- Maximum value is at vertex- the point (3, 4).
- Maximum value is y = 4
c) and d) x - and y - intercepts already given in the question
e) Domain is all real numbers. x = ( -∞, +∞ )
Range is y = ( - ∞, 4]
