Find the x-value of all points where the function has relative extrema. Find the value(s) of any relative extrema.f(x) = 2 + 8x - x2
A. Relative maximum of 50 at 0.
B. Relative minimum of 0 at 4.
C. Relative maximum of 16 at - 4.
D. Relative maximum of 18 at 4.
Answer: D
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Determine ? in decimal degrees, 0° ? ? ? 90°. Round results to an appropriate number of significant digits.cot ? = 1.237
A. 38.950° B. 34.830° C. 38.95° D. 34.83°
The pair of triangles is congruent. List the corresponding angles and the corresponding sides. 
A. ?1 and ?6; ?2 and ?5; ?3 and ?4; 
and 
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and 
; 
and 
B. ?1 and ?5; ?2 and ?6; ?3 and ?4; 
and 
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and 
; 
and 
C. ?1 and ?6; ?2 and ?5; ?3 and ?4; 
and 
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and 
; 
and 
D. ?1 and ?5; ?2 and ?6; ?3 and ?4; 
and 
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and 
; 
and 
Estimate. Then find the actual difference.631.23 - 71.8
A. Estimate: 570; Actual: 569.43 B. Estimate:560; Actual: 560.43 C. Estimate: 570; Actual: 559.43 D. Estimate: 560; Actual: 559.43
Determine whether the given ordered set of numbers is a solution of the system of equations.(-1, 3, -1.5)
A. Yes B. No