Use the basic trigonometric identities to find the exact value of the expression.Given sec t =-5 and tan t < 0, find tan t.
A. tan t = -4
B. tan t = -6
C. tan t = -
D. tan t = -2
Answer: D
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Find the limit L for the given function f, the point x0, and the positive number ?. Then find a number ? > 0 such that, for all x, 
f(x) = 
, x0 = 2, ? = 0.4
A. L = 2; ? = 0.48 B. L = 2; ? = 0.59 C. L = 3; ? = 0.48 D. L = j-1; ? = 0.21
Provide an appropriate response.Write the relation as a map. Then identify the domain and the range of the relation. {(4, 16), (7, 28), (10, 40), (13, 52)}
A. 
domain:{16, 28, 40, 52}
range: {4, 7, 10, 13}
B. 
domain: {4, 7, 10, 13}
range: {16, 28, 40, 52}
C. 
domain: {4, 7, 10, 13}
range: {16, 28, 40, 52}
D. 
domain:{16, 28, 40, 52}
range: {4, 7, 10, 13}
Solve the problem.The half-life of Titanium 45 is 3.1 hours. If the formula 
gives the percent (as a decimal) remaining after time t (in hours), sketch P versus t.
A. 
B. 
C. 
D. 
Solve the system by substitution.y - x2 = 3xy = x - 1
A. (-1, -4) and (-1, -2) B. (-1, -2) and (-1, -3) C. (-1, -2) and (-1, -2) D. (-1, -2)