How much is 2a+b greater than 2b? Simplify your result

In a school 2/3 of the students study a language of those who study a language 2/5 study french

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? )

Someone me what is the area of this figure? 18m 18m 8m 16m