The math department purchases a photocopier for $4,500. Write an equation (in y=mx+b form) to model the value of the photocopier, y, in
x years if the copier's value depreciates at a constant rate of $400 per
year.

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?

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

Which of the following contains a variable?