For as long distance phone service dale pays a two dollar monthly fee plus $.12 per minute last month sales long distance bill was $19.64 for how many minutes was dale billed

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Someone which statements are true? check all that apply.

Which statement is correct? the range of the graph is all real numbers greater than or equal to 0. the domain of the graph is all real numbers greater than or equal to 0. the range and domain of the graph are the same. the domain of the graph is all real numbers