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?
30; 70; 10; 12,600
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A. 268.79° B. 268.83° C. 268.89° D. 268.84°
Find the common ratio for the geometric sequence.
, 
, 
, 
, ...
A. 
B. 3
C. 
D. 
Solve. Write the fraction in simplest form.As part of her fitness training, Alice plans to cycle 24 miles today. So far, she has cycled 20 miles. What fraction of the total miles for the day is represented by 20 miles?
A. 
B. 
C. 
D. 
Graph the line. Also, give the x-intercept (if any), y-intercept (if any), and slope of the line (if defined).f(x) = 
x + 2
A. x-intercept: (-4, 0); y-intercept: (0, 2);
slope: 
B. x-intercept: (4, 0); y-intercept: (0, -2);
slope: 
C. x-intercept: (4, 0); y-intercept: (0, 2);
slope: - 
D. x-intercept: (-4, 0); y-intercept: (0, -2);
slope: - 
