Find the equation of the tangent line to the curve when x has the given value.f(x) = 
- 
+ 4 ; x = 3
A. y = -7x - 9
B. y = -7x + 28
C. y = 
+ 1
D. y = 
- 
Answer: D
Mathematics
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A straight road makes an angle, A, of 10° with the horizontal. When the angle of elevation, B, of the sun is , a vertical pole beside the road casts a shadow 6 feet long parallel to the road. Approximate the length of the pole. Round answer to two decimal places.
A) 4.28 feet
B) 1.97 feet
C) 5.26 feet
D) 9.60 feet
E) 8.41 feet
Mathematics
List the critical values of the related function. Then solve the inequality.
< 
A. - 
, 0; 
? (0, ?)
B. No critical values; (-?, ?)
C. 
, - 
, 0, 
; 
? 
D. -7, 
, - 
, 0, 
; 
? 
? 
Mathematics
Graph y = f(x).f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Determine whether the equation defines y as a function of x. x - 4y = 5
A. function B. not a function
Mathematics