Use reference angles to find the exact value of the expression. Do not use a calculator.cot 
A. 
B. 
C. - 
D. -
Answer: B
Mathematics
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Find the equilibrium solution of the equation. Use a sketch of the direction field for 
to determine whether the equilibrium is stable.y'(t) = 2y - 20
A. y = 10; unstable
B. y = 10; stable
C. y = 
; unstable
D. y = 22; stable
Mathematics
Determine the domain and range of the function.f(x) = 7 - x2
A. Domain: (-?, ?) Range: [-7, ?) B. Domain: (-?, ?) Range: (-?, 7] C. Domain: (-?, ?) Range: (-?, -7] D. Domain: (-?, ?) Range: [7, ?)
Mathematics
Solve the equation using the quadratic formula.3x2 = -8x - 3
A. 
B. 
C. 
D. 
Mathematics
Evaluate. Simplify if possible.- 
- 
A. - 
B. 
C. 
D. - 
Mathematics