Find the exact value of the trigonometric expression without the use of a calculator.
A. 
B. 
C. 2
D. 
Answer: B
Mathematics
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Solve.For a fixed amount of principal, the simple interest varies jointly with the rate and the time. If the simple interest is $1750 when the rate is 5% and the time is 7 years, find the simple interest when the rate is 6% and the time is 10 years.
A. $6000 B. $300 C. $3300 D. $3000
Mathematics
Evaluate f(x) at the given value of x by hand. f(x) = 
; x = -4
A. - 
B. - 
C. - 
D. 
Mathematics
Find the domain of the given function.f
= 
A. (-?,3] ? [3,?) B. All real numbers C. (-?,0) ? (0,?) D. [0,?)
Mathematics
Find the limit.
sec-1 x
A. 0
B. 
C. -?
D. - 
Mathematics