There were 260 students enrolled in a school last year and 40 teachers employed by the same school. this year the number of students increased by 10% but the number of teachers decreased by 5%. find the percent of change of the student per teacher ratio of the school.

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? )