Solve the problem.A farmer's silo is the shape of a cylinder with a hemisphere as the roof. If the radius of the hemisphere is 10 feet and the height of the silo is h feet, express the volume of the silo as a function of h.
A. V(h) = 100 ?h + 
?h2
B. V(h) = 100 ?(h - 10) + 
?
C. V(h) = 4100 ?(h - 10) + 
?
D. V(h) = 100 ?(h2 - 10) + 
?
Answer: B
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Solve the problem.Find the hydrogen ion concentration of a solution whose pH is 7.5. Use the formula 
A. -8.75 x 10-1 B. 8.75 x 10-1 C. 3.16 x 107 D. 3.16 x 10-8
Use a graphing calculator to graph the given function. Be sure to set the graphic window parameters to the given values.y = 0.7
xwindow dimensions [xmin, xmax, ymin, ymax] = [-5, 5, -1, 9]x-scale (xscl) = 1; y-scale (yscl) = 1
A. 
B. 
C. 
D. 
Solve the system.
A. (6, -5), (5, -6) B. (-6, -5), (-5, -6) C. (6, 5), (5, 6) D. (-6, 5), (-5, 6)
Solve the inequality. Graph the solution set, and state the solution set in interval notation.|x| < 3
A. [-3, 3]
B. (-3, 3)
C. (-?, -3) ? (3, ?)
D. (-?, 3]