Use the quadratic formula to solve the equation -8x2 - 3x + 6 = 0.
A. 
B. no solution
C. 0, -1
D. 
E. none of these
Answer: E
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Translate the problem situation to a system of equations. Do not solve.Ricks Paint Store sells a special shade of pink paint (Ricky's Blush) which can be made from red paint and white paint. The amount of red paint should be three times the amount of white paint. How much of each kind of paint is needed to make 200 gallons of Ricky's Blush?
A. x + y = 200; x = 3y B. x - y = 200; x = 4y C. x - y = 200; x = 3y D. x + y = 200; x = 4y
Determine where the graph of the function 
is concave upward and where it is concave downward. Also, find all inflection points of the function.
Select the correct answer. a. CU on (?2, 2), IP none b. CU on (??, ?2) and (2, ?), CD on (?2, 2), IP (?2, ?18) and (2, 18) c. CD on (?2, 2), IP none d. CU on (?2, 2), CD on (??, ?2) and , IP (?2, ?18) and (2, 18)
Solve the problem.Two recording devices are set 3800 feet apart, with the device at point A to the west of the device at point B. At a point on a line between the devices, 200 feet from point B, a small amount of explosive is detonated. The recording devices record the time the sound reaches each one. How far directly north of site B should a second explosion be done so that the measured time difference recorded by the devices is the same as that for the first detonation?
A. 1889.44 feet B. 8016.23 feet C. 423.53 feet D. 1272.55 feet
Use your grapher to determine which of the graphs matches the given polar equation.r = 2 - 2 sin ?
A. 
B. 
C. 
D. 