Solve the problem.A straight trail with a uniform inclination of 12° leads from a lodge at an elevation of 1000 feet to a mountain lake at an elevation of 9800 feet. What is the length of the trail (to the nearest foot)?
A. 10,019 feet
B. 47,135 feet
C. 42,326 feet
D. 8997 feet
Answer: C
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Find the value of d2y/dx2 at the point defined by the given value of t.x = 7t2 - 4, y = t5, t = 1
A. 
B. - 
C. - 
D. 
Find f(x) and g(x) such that h(x) = (f ? g)(x).h(x) = 
A. f(x) = x, g(x) = 8x + 3
B. f(x) = -
, g(x) = 8x + 3
C. f(x) = 
, g(x) = 8x + 3
D. f(x) = 
, g(x) = 8x - 3
Estimate the sum, difference, product, or quotient involved in the problem.An advertisement states that television sets are on sale at B&G Electronics. The prices are: src="https://sciemce.com/media/4/ppg__rrr0708191005__f1q34g6.jpg" alt="" style="vertical-align: -4.0px;" /> 
set, 
set, 
set, 
$289.97; 
$519.97. Estimate to the nearest ten the total cost of one 
set and one 
set.
A. $740
B. $720
C. $710
D. $730
Find the vertices of the ellipse.16x2 - 160x + 25y2 + 250y + 625 = 0
A. (-5, 0), (-5, 10) B. (0, -5), (10, -5) C. (2, -5), (8, -5) D. (1, -5), (9, -5)