Factor completely. If the polynomial is prime, so state.40x3 - 76x2 - 60x
A. x(5x + 3)(8x - 20)
B. 4(5x2 + 3)(2x - 5)
C. 4x(5x + 3)(2x - 5)
D. x(20x + 12)(2x - 5)
Answer: C
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Find the mass of the wire that lies along the curve r and has density ?.r(t) = 5i + (9 - 3t)j + 4tk, 0 ? t ? 2? ; ? = 9(1 + sin 9t)
A. 90? units B. 10 + 90? units C. 18? units D. 20 + 90? units
Integrate the function.
dt
A. - 
5+ C
B. - 
5+ C
C. - 
D. - 
5+ sec-1
+ C
Write the equation for the plane.The plane through the point P(-4, 6, -6) and parallel to the plane 
A. -2x - 3y + 8z = 58 B. -2x - 3y + 8z = -38 C. -2x - 3y + 8z = -58 D. 4y = -58
Solve the problem.The ratio of the distances a pitching wedge and an 8-iron will drive a golf ball is 4 to 5. If a golfer averages 76 yards with a pitching wedge, how far should she average with an 8-iron?
A. 85 yd B. 95 yd C. 67 yd D. 61 yd