Which of these expressions is a binomial?

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

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

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)