Suppose x, y, and z are positive integers such that xy + yz = 29 and xz + yz = 81. Which of the following variables has exactly one unique solution? (i) x
(ii) y
(iii) z
A. none
B. ii only
C. iii only
D. i and ii only
E. ii and iii only

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay