Evaluate the expression using the given values.
; x = -5, y = -3, z = 4.
A. 
B. - 
C. - 5
D. 5
Answer: D
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Refer to this figure to decide whether the statement is true or false. 
and 
are sides of ?DEA.
A. True B. False
Factor.250x3 - 54y3
A. 2(5x - 3y)(25x2 + 15xy + 9y2) B. 2(5x - 3y)(25x2 - 15xy + 9y2) C. 2(5x - 3y)(25x2 + 15xy - 9y2) D. 2(5x + 3y)(25x2 - 15xy + 9y2)
The latitude of any location on Earth is the angle formed by the two rays drawn from the center of Earth to the location and to the equator. The ray through the location is the initial ray. Use 3960 miles as the radius of Earth.City A is due north of City B. Find the distance between City A (north latitude 48°29' N) and City B 
Round your answer to the nearest mile.
A. -346 mi B. -313 mi C. -378 mi D. -120 mi
For the quadratic function, tell whether the graph opens up or down and whether the graph is wider, narrower, or the same shape as the graph of 
f(x) = 9x2 - 8
A. Up; narrower B. Down; wider C. Down; narrower D. Up; wider