Find the zeros for the polynomial function and give the multiplicity for each zero. State whether the graph crosses the x-axis or touches the x-axis and turns around, at each zero.f(x) = x3 + 8x2 + 20x + 16
A. 2, multiplicity 1, crosses the x-axis;
-2, multiplicity 1, crosses the x-axis;
-4, multiplicity 1, crosses the x-axis.
B. -2, multiplicity 2, touches the x-axis and turns around;
-4, multiplicity 1, crosses the x-axis.
C. 2, multiplicity 1, crosses the x-axis;
-2, multiplicity 2, touches the x-axis and turns around;
-4, multiplicity 1, crosses the x-axis.
D. -2, multiplicity 2, crosses the x-axis;
-4, multiplicity 1, touches the x-axis and turns around
Answer: B
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Express the verbal representation for the function f symbolically.Multiply the input x by 3 and then subtract 16 to obtain the output y.
A. y = 3 - 16x B. y = 16 - 3x C. y = -13x D. y = 3x - 16
Solve the problem.A projectile is fired from a height of 7.7 feet with an initial velocity of 153 ft/sec at an angle of 55° with the horizontal. The parametric equations for the path of the projectile are x = (153 cos 55°)t, and y = 7.7 + (153 sin 55°)t - 16t2,where x and y are in feet and t is in seconds. How long does it take the projectile to hit the ground? Round your answer to the nearest tenth of a second.
A. 7.8 seconds B. 7.9 seconds C. 10.1 seconds D. 15.8 seconds
Use interval notation to describe the interval of real numbers.
A. [-4, ?) B. (-?, -4] C. (-?, -4) D. (-4, ?)