Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cot(7x - 5)
A. y = cot u; u = 7x - 5; 
= - 7 csc2(7x - 5)
B. y = cot u; u = 7x - 5; 
= - 7 cot(7x - 5) csc(7x - 5)
C. y = 7u - 5; u = cot x; 
= - 7 cot x csc2 x
D. y = cot u; u = 7x - 5; 
= - csc2(7x - 5)
Answer: A
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A. 
B. 
C. 
D. 
Solve the following quadratic equation using the Square Root Property. Make sure you simplify the final answer completely. Find the exact answer and a decimal approximation to the nearest tenth when possible.4x2 = 180
A. x = 12
or x = -12
; x ? 26.8 or x ? -26.8
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or x = -5
; x ? 8.7 or x ? -8.7
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