Graph the system of inequalities, and find the coordinates of the vertices.3y + x ? 0,y + 2x ? 10,y ? 0
A. 
B. 
C. 
D. 
Answer: B
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Find the indicated derivative.Find y " if y = 5x sin x.
A. y " = 10 cos x - 5x sin x B. y " = - 10 cos x + 5x sin x C. y " = 5 cos x - 10x sin x D. y " = - 5x sin x
Completely factor the polynomial.y2 - 11y + 18
A. (y - 2)(y - 9) B. (y - 18)(y - 1) C. (y + 2)(y + 9) D. (y - 2)(y + 9)
Answer the question asked. When necessary, round to the nearest hundredth.Glenn and Paula want to dig an irrigation channel for their newest garden. Together it takes them 1.7 hours to dig an appropriately sized irrigation channel. If Paula can dig the channel by herself in 2.3 hours, how long would it take Glenn by himself to dig the channel? If necessary, round to the nearest tenth of an hour.
A. 4 hr B. 0.6 hr C. 4.8 hr D. 6.5 hr
Solve the problem.When an object is dropped straight down, the distance in feet that it falls in t seconds is given by 
where negative distance (or velocity) indicates downward motion. Find the velocity and acceleration at 
A. Velocity = -32 ft/sec; acceleration = 0 ft/sec2 B. Velocity = -256 ft/sec; acceleration = 0 ft/sec2 C. Velocity = -256 ft/sec; acceleration = -32 ft/sec2 D. Velocity = -32 ft/sec; acceleration = -256 ft/sec2