The scores of students on a standardized test form a normal distribution with a mean of 300 and a standard deviation of 40. What must a student score in order to be in the upper 10%?
What will be an ideal response?
351 or higher
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Solve the problem.Write parametric equations for the tangent line to the curve of intersection of the surfaces 
and 
at the point 
A. 
B. 
C. 
D. 
Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves about the given lines.y = 2x,
y = x2; revolve about the y-axis
A. 
?
B. 
?
C. 
?
D. - 
?
Solve the problem.Find the value of a retirement savings account paying an APR of 5.4% (compounded monthly) after 45 years of monthly contributions (contributions made at the end of each month, including the last month) when the monthly contribution is $75. Round your answer to the nearest cent.
A. $176,967.99 B. $182,041.73 C. $161,028.76 D. $171,618.86 E. $161,742.70
Divide and, if possible, simplify.
A. 2a20z35 
B. 2a4z7
C. 2a20z35
D. 2a15z30 