Solve and simplify.
+ x = 
A. x = 
B. x = 
C. x = 
D. x = 
Answer: C
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Find the domain of the composite function (g ? f)(x). Write the domain in interval notation.f(x) = 
, g(x) = 4x6
A. (-?, ?) B. (-?, 5) ? (5, ?) C. (-?, 0] D. (-?, 0) ? (0, ?)
Solve.
< 9
A. ?
B. (-?, -6) ? 
, or 
C. 
, or 
D. 
? (6, ?), or 
Use a graphing calculator to make a conjecture as to whether each equation is an identity.sin 
cos 
= 
A. Not an identity B. Identity
Solve the problem.Susan purchased some municipal bonds yielding 7% annually and some certificates of deposit yielding 9% annually. If Susan's investment amounts to $19,000 and the annual income is $1590, how much money is invested in bonds and how much is invested in certificates of deposit?
A. $13,000 in bonds; $6000 in certificates of deposit B. $6000 in bonds; $13,000 in certificates of deposit C. $5500 in bonds; $13,500 in certificates of deposit D. $13,500 in bonds; $5500 in certificates of deposit