Write a system of linear equations in three variables, and then use matrices to solve the system.The table below shows the number of birds for three selected years after an endangered species protection program was started.
Use the quadratic function y = ax2 + bx + c to model the data. Solve the system of linear equations involving a, b, and c using matrices. Find the equation that models the data.
A. y = 3x2 + 24x + 24
B. y = 4x2 - 12x + 32
C. y = 4x2 - 36x + 25
D. y = 2x2 + 12x + 29
Answer: D
Mathematics
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Mathematics
Show that f and g are inverses of each other by verifying that f(g(x)) = x = g(f(x)).f(x) = 
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Mathematics
Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.cos 31.2°
A. sin 58.8° B. cos 148.8° C. sec 148.8° D. sin 31.2°
Mathematics
Verify the identity.tan ? ? csc ? = sec ?
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Mathematics