Name the conic.
A. parabola
B. ellipse
C. hyperbola
D. circle
Answer: D
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Solve the problem.A data set consists of 248 test scores. Over a long period it has been found that the mean and standard deviation for these scores are known and that the scores are normally distributed. How many scores within this data set should lie within three standard deviations of the mean? Round your answer to the nearest whole number.
A. 237 B. 247 C. 169 D. 124
Solve the problem. Round to the nearest cent.Green Thumb Landscaping wants to build a $140,000 greenhouse in 2 years. The company sets up a sinking fund with payments made quarterly. Find the payment into this fund if the money earns 8% interest compounded quarterly.
A. $7511.02 B. $10,438.34 C. $16,311.37 D. $33,967.33
Evaluate the sum using the given information.x1 = -1, x2 = 2, x3 = -4, x4 = 1, and x5 = -2
A. -12 B. -16 C. 45 D. 7
Add or subtract as indicated. Simplify, if necessary.- 
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A. - 
B. - 
C. 
D. - 