Find the value of the expression using the given values.
?x = 6, y = 8
A. 9
B. 10
C. 7
D. 5
Answer: B
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Solve the problem by using addition, subtraction, multiplication, or division as needed.An employee was paid $34,419 during the first half of last year. During the second half she was paid $65,286. How much more was her income during the second half?
A. $99,704 B. $99,705 C. $30,866 D. $30,867
Find the indicated series by the given operation.Find the first four nonzero terms of the expansion of the function 
by adding the terms of the appropriate series. The result is the series for cosh x.
A. x + 
x2 + 
x3 + 
x5 + . . .
B. 1 + 
x2 + 
x4 + 
x6 + . . .
C. x + 
x2 + 
x4 + 
x6 + . . .
D. 1 + 
x2 + 
x3 + 
x4 + . . .
Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cos4 x
A. y = cos u; u = x4; 
= - sin(x4)
B. y = u4; u = cos x; 
= 4 cos3 x sin x
C. y = cos u; u = x4; 
= - 4x3 sin(x4)
D. y = u4; u = cos x; 
= - 4 cos3 x sin x
Solve the inequality. Write the solution set in interval notation.|x + 3| > 6
A. ? B. (-?, -9) ? (3, ?) C. (3, ?) D. (-9, 3)