Perform the indicated operation and express the answer in simplest form.(
- 
)(
+ 
+ 
)
A. 2 + 
- 
B. 2
C. 2 + 2
+ 2
D. 8
Answer: B
Mathematics
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Solve.The pressure P (in pounds per square inch or psi) on a submerged body in wastewater is given by 
where D is the depth in feet. At what depth is the pressure 45.0 psi? (Round to the nearest tenth, if necessary.)
A. 58.3 ft B. 114.8 ft C. 62.9 ft D. 86.5 ft
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Give the exact value of the expression.cos 
A.
B.
C.
D.
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Solve the problem.Suppose that $2400 is invested at 3% interest, compounded quarterly. Find the function for the amount of money after t years.
A. A(t) = 2400(1.0075)t B. A(t) = 2400(1.03)4t C. A(t) = 2400(1.03)t D. A(t) = 2400(1.0075)4t
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For the given f(x) and g(x), evaluate the expression.f(x) = 
, g(x) = 
;
(fg)(x)
A. 21|x + 2| B. 40|x + 2| C. 21|x - 2| D. 40|x -2|
Mathematics