Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = 4x2 + 40x + 103 
A. vertex (-5, 3)
intercept
B. vertex (-5, 3)
intercept (0, 103)
C. vertex (5, 3)
intercept (0, 103)
D. vertex (5, 3)
intercept
Answer: B
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A cable railway had a 12-foot-diameter pulley to drive the cable (see the figure). In order to keep the cable cars moving at a linear velocity of 9 miles per hour, how fast would the pulley need to turn (in revolutions per minute)? (1 mi = 5,280 ft)
?
?
A. 23.2 rpm B. 24.5 rpm C. 15.3 rpm D. 28.1 rpm E. 21.0 rpm
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