Solve the equation.
n = 9
A. 4
B. 
C. 
D. 18
Answer: D
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A building in the shape of a rectangular box is to have a volume of 21,000ft3 (see the figure). It is estimated that the annual heating and cooling costs will be $2/square foot for the top, $7/square foot for the front and back, and $3/square foot for the sides. Find the dimensions of the building that will result in a minimal annual heating and cooling cost. What is the minimal annual heating and cooling cost(C)?
?
?
x = __________
?
y = __________
?
z = __________
?
C = __________
What will be an ideal response?
Graph the linear inequality in two variables.x + y < -2
A. 
B. 
C. 
D. 
Find the x- and y-intercepts of f.f(x) = (x + 3)2
A. x-intercept: -3; y-intercept: 9 B. x-intercept: 3; y-intercept: 9 C. x-intercept: 3; y-intercept: 0 D. x-intercept: -3; y-intercept: 0
Find the mean and standard deviation of the specified probability density function.f(x) = 0.6e-0.6x for [0, ?)
A. ? = 1.67, ? = 1.67 B. ? = 16.67, ? = 16.67 C. ? = 1.71, ? = 1.67 D. ? = 1.5, ? = 1.5