Use the discriminant of the equation to determine the number of x-intercepts.f(x) = -x2 - 9x + 5
A. No x-intercepts
B. Two x-intercepts
C. One x-intercept
Answer: B
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Factor the trinomial by grouping.
?
?
A. 
B. 
C. 
D. 
E. 
Find the values of x for which the given function is concave up, the values of x for which the function is concave down, and any points of inflection.y = 
x3 - 12x2 + 10x + 43
A. Concave down for 0 < x < 3, concave up for x < 0, x > 3, points of inflection at (0, 43), (3, 1) B. Concave down for all x, no points of inflection C. Concave up for x < 3, concave down for x > 3, point of inflection at (3, 1) D. Concave down for x < 3, concave up for x > 3, point of inflection at (3, 1)
Solve the problem by integration.Find the moment of inertia of a sphere of radius 7 with respect to its axis in terms of its mass m.
A. 
?m
B. 
m
C. 
m
D. 
m
Determine whether or not the equation is linear.5x - 6x = 0
A. Linear B. Not linear