Find the value of each variable. If your answer is not an integer, express it in simplest radical form. PELASE HELP ME

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

Determine the intercepts of the line that passes through the following points. (15,-3)(15,−3) (20,-5)(20,−5) (25,-7)(25,−7)

For a particular set of atmospheric conditions, the function y z 349 models the frequency, y, in waves per second, of sound waves with a wavelength of y meters a note played on a guitar has a frequency of 440 waves per second. to the nearest centimeter what is the wavelength of the note? centimeters