Solve the problem.The regular price of a double roll of wallpaper is $27. During a May sale, wallpaper was discounted 30%. What was the sale price of a double roll of wallpaper?
A. $7.10
B. $18.90
C. $8.10
D. $17.90
Answer: B
Mathematics
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Simplify.2 + 
A. 
B. 
C. 
D. 
Mathematics
Use the reciprocal identities to find the indicated function value.sec ? = -3, find cos ?
A. - 
B. 
C. 
D. - 
Mathematics
In a certain distribution, the mean is 50 with a standard deviation of 6. Use Chebyshev's theorem to tell the probability that a number lies in the following interval. Round your results to the nearest whole percent.Between 26 and 74
A. At least 96% B. At least 94% C. At least 90% D. At least 93%
Mathematics
Find the equation of the axis of symmetry of the parabola.y = 3x2 - 12x + 7
A. x = 2 B. x = -5 C. x = 5 D. x = -2
Mathematics