Which function is an even function? A. f(x) = sin(-3pix) B. f(x)tan(3pix) C. f(x)= cos(5pi/4x) D. f(x)= csc (-pi/2x)

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

Someone me! if you’re smart you can solve this!