Which of the following would be an acceptable first step in simplifying the expression sinx/1-cosx?
A. sinx(1+cosx)/(1-cosx)(1+cosx)
B. Cannot be simplified further
C. 1/cscx-cosx
D. sinx-sinx/cosx

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Twelve less than a number is at most 20

Which of the following circles have their centers in the third quadrant? check all that apply.