Evaluate the integral by using multiple substitutions.
dy
A. 6 sin2 
+ C
B. 
cos4 
+ C
C. 
sin4 
+ C
D. 2 sin4 
+ C
Answer: C
Mathematics
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Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = -5
B. none
C. x = 0, x = - 
D. x = -25
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Simplify the exponential expression. Write any negative exponents as positive exponents. Assume all variables represent positive real numbers.(9x16y-18)5/2
A. 243x40y45
B. 
C. 
D. 
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Add.49.09 + 5 + 70.56 + 26.206
A. 150.956 B. 150.866 C. 151.856 D. 150.856
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Find the equation of the secant line through the points where x has the given values.f(x) = 
; x = 6, x = 10
A. y = - 
B. y = 
x - 
C. y = - 
x + 
D. y = - 
x
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