Find the sum of the arithmetic sequence.1 + 2 + 3 + ... + 329
A. 54285
B. 108,570
C. 53956
D. 108,241
Answer: A
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Find the vertex for the parabola whose equation is given.y = -x2 + 2x - 8
A. (2, -8) B. (-1, -9) C. (1, -7) D. (-1, -11)
Write the equation of the axis of symmetry.f(x) = 2x2 - 16x + 27
A. x = -4 B. x = 5 C. x = 4 D. x = -5
Translate the phrase to an algebraic expression. Use "x" to represent "a number". A number increased by - 
A. - 
? x
B. 
C. x + 
D. x - 
Solve the problem.Newton's Universal Law of Gravitation states that the attractive force exerted on one spherically symmetric object of mass M by a second spherically symmetric object of mass m is given by 
where r is the distance between the centers of the two objects and G is a constant equal to 
when F is in newtons (N), M and m are in kilograms (kg), and r is in meters (m). What is the magnitude of the gravitational force exerted on an object of mass 1 kg by an object of mass 10 kg if the objects are 1 m apart?
A. 6.67 × 10-12 N B. 6.67 × 10-10 N C. 1 × 10-10 N D. 1 × 10-7 N