Find the value of (f ? g)' at the given value of x.f(u) = 
- u, u = g(x) = ?x, x = 7
A. -7?
B. 4 - ?
C. 7?
D. -?
Answer: D
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Solve the problem.A hiker wants to know the height of a cliff. She finds that the angle of elevation from her current position to the top of the cliff is 24.6°. She then hikes 171 feet towards the cliff (in a straight line) and finds that the angle of elevation from her new position is 57.6°. How tall is the cliff? Round your answer to the nearest hundredth of a foot when necessary.
A. 110.35 ft B. 115.47 ft C. 112.65 ft D. 106.9 ft
Without actually converting, choose the most reasonable answer.A two-car garage is about __________ wide.
A. 800 m B. 8 m C. 80 m D. 8000 m
Write the quadratic equation in standard form. Determine the values of a, b, and c.-2 - 6x - 4x2 = 0
A. 0 = 4x2 - 6x + 2 a = 4, b = -6, c = 2 B. -4x2 + 6x - 2 = 0 a = -4, b = 6, c = -2 C. 4x2 + 6x + 2 = 0 a = 4, b = 6, c = 2 D. 0 = 4x2 + 6x + 2 a = -4, b = 6, c = -2
Answer the question.Explain the difference between adding rational expressions and solving rational equations.
What will be an ideal response?