Solve the quadratic inequality by any method. Write your answer in interval notation.x2 - 11x + 28 < 0
A. (-?, 7)
B. (4, 7)
C. (-4, 7)
D. (0, 7)
Answer: B
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Find all the second order partial derivatives of the given function.f(x, y) = (x2 + y2)7
A. fxx(x, y) = 168x2(x2 + y2)5 + 14(x2 + y2)6; fyy(x, y) = 168y2(x2 + y2)5 + 14(x2 + y2)6; fxy(x, y) = fyx(x, y) = 168xy(x2 + y2)6 + (x2 + y2)7 B. fxx(x, y) = 168x2(x2 + y2)5 + 14(x2 + y2)6; fyy(x, y) = 168y2(x2 + y2)5 + 14(x2 + y2)6; fxy(x, y) = fyx(x, y) = 168xy(x2 + y2)5 + (x2 + y2)6 C. fxx(x, y) = 168x2(x2 + y2)5 + 14(x2 + y2)6; fyy(x, y) = 168y2(x2 + y2)5 + 14(x2 + y2)6; fxy(x, y) = fyx(x, y) = 168xy(x2 + y2)5 + 14(x2 + y2)6 D. fxx(x, y) = 168x2(x2 + y2)5 + 14(x2 + y2)6; fyy(x, y) = 168y2(x2 + y2)5 + 14(x2 + y2)6; fxy(x, y) = fyx(x, y) = 168xy(x2 + y2)5 + 14xy(x2 + y2)6
Your pricing structure for canoe rentals encourages group rentals. The total price, in dollars, you charge for renting n canoes is
?
.
?
What is the maximum charge for a group canoe rental?
?
A. $676 B. $52 C. $679 D. $26
Solve the problem.Rewrite the integral 
in the order 
.
A. 
B. 
C. 
D. 
Write the improper fraction as a mixed number or a whole number.
A. 13
B. 
C. 14
D. 15