Determine the coordinates of the focus and the equation of the directrix of the parabola.y2 - 16x = 0
A. F(4, 0), x = 4
B. F(0, 4), y = -4
C. F(4, 0), y = -4
D. F(4, 0), x = -4
Answer: D
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Use the formula for an to find the general term for the arithmetic sequence.5, 0, -5, . . .
A. an = 10n - 5 B. an = -5n + 10 C. an = n - 5 D. an = 5n - 5
Decide whether or not the functions are inverses of each other.f(x) = 
, domain [-5, ?); g(x) = x2 + 5, domain (-?, ?)
A. No B. Yes
Solve the triangle using the labels as shown in the illustration below.Do not use rounded answers in your calculations. For final answers, round angles to the nearest tenth of a degree.a = src="https://sciemce.com/media/3/ppg__cognero__Section_14.5_Solving_Oblique_Triangles_Law_of_Cosines__media__90694916-156b-4cd3-9042-3cc1f25787d4.GIF" style="vertical-align:-1px;" varid="variable_id_field" variablename="impvar_a17929059e9347a7952f466ed" class="wirisformula" /> m
cm, b = 
cm, c = 
A. 
°, 
°, 
°
B. 
°, 
°, 
°
C. 
°, 
°, 
°
D. 
°, 
°, 
°
E. 
°, 
°, 
°
Solve. Reduce the fraction in your answer.There are 11,200 employees at a company. If 2100 are females, what fraction of the employees are males?
A. 
B. 
C. 
D. 