7. Which function has -5 as its only zero? A. f(x)=(x - 1)(x + 5)
B. f(x) = x(x + 5) C. f(x)=(x – 5)2
D. f(x)=(x + 5)2

Given (1+cosx)/(sinx) + (sinx)/(1+cosx) =4, find a numerical value of one trigonometric function of x. a. tanx=2 b. sinx=2 c. tanx=1/2 d. sinx=1/2

What is the solution to the equation 9^(x+1) =27

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?