Find any restricted values for the given rational expression.
A. x = -8, x = 8
B. none
C. x = -2, x = -8, x = 8
D. x = -64, x = 0
Answer: B
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Find an upper bound for the magnitude |E| of the error in the linear approximation L to f at the given point over the given region.
at 
R: |x| ? 0.1, |y| ? 0.1
A. |E| ? 5.3278 B. |E| ? 4.6619 C. |E| ? 9.3237 D. |E| ? 2.6639
Provide an appropriate response. A plane is observed approaching a tower. Its speed is known to be 525 miles per hour. If the angle of elevation is 18° and 2 minutes later it is 65°, approximate the altitude of the plane.
A. 13.4 miles B. 17.5 miles C. 5.7 miles D. 20.6 miles
Write a negation for the statement.12x + 11y < 12
A. 12x + 11y > 11 B. 12 > 12x + 11y C. 12x + 11y ? 12 D. 12x + 11y ? 12
If s denotes the length of the arc of a circle of radius r subtended by a central angle ?, find the missing quantity.r = 
feet, s = 6 feet, ? = ?
A. 12° B. 3 radians C. 3° D. 12 radians