Solve the problem.At one college, GPAs are normally distributed with a mean of 2.6 and a standard deviation of 0.6. What percentage of students at the college have a GPA between 2 and 3.2?
A. 47.5%
B. 84%
C. 95%
D. 68%
Answer: D
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Find the average value of 
over the given region.
+ z2 over the cube in the first octant bounded by the coordinate planes and the planes 
, 
, 
A. 27 B. 3 C. 9 D. 18
Solve the problem. Round amounts to the nearest cent and percents to the nearest tenth of a percent.A set of speakers that costs $105 sells for a 25% markup based on the cost. What is the markup of the speakers?
A. $131.25 B. $84.00 C. $420.01 D. $26.25
Find the domain and range of the inverse of the given function.f(x) = 3x + 1
A. Domain: [3, ?), range: (-?, 1] B. Domain: (-?, ?), range: (-?, 1] C. Domain and range: (-?, ?) D. Domain: (-?, 1]; range: (-?, ?)
Determine whether the graph representing the equation is symmetric with respect to the x-axis, the y-axis, the origin or none.y = 4x2 - 1
A. x-axis only B. x-axis, y-axis, origin C. origin only D. y-axis only