Find the break-even point for the total-cost and total-revenue functions.C(x) = 10x + 357,500R(x) = 35x
A. (14,200 units, $497,000)
B. (14,300 units, $500,500)
C. (14,400 units, $504,000)
D. (14,500 units, $507,500)
Answer: B
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Solve the equation 
for y. Round your answers to two decimal places, if necessary.
?
A. 
or 
B. 
or 
C. 
or 
D. None of the above.
Solve the problem.Robert has built a mechanical model solar system with three balls representing planets at the ends of rods attached to the center representing the sun. The planets are aligned when he turns on the motor. The innermost planet makes a revolution in 18 seconds, the middle planet makes a revolution in 30 seconds, and the outermost planet makes a revolution in 42 seconds. After how many seconds will the planets be aligned again?
A. 945 seconds B. 630 seconds C. 315 seconds D. 1260 seconds
Solve the quadratic equation by completing the square.x(x + 2) = 35
A. 7, 5 B. -7, 1 C. -7, 5 D. -5, 7
Find the distance between the pair of points. Give an exact answer, and where appropriate, an approximation to three decimal places.(0, 0) and (c, d)
A. 
B. c2 + d2
C. c + d
D. 