A car wash charges $8 per car and can wash at most 10 cars each hour. The amount the carwash earns in an hour depends on the number of cars washed. What is the domain of this reaction?

What is sin 7x/4 ? i need on this urgent trig

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.