Evaluate the function f(x) = -3x when x = -1

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?