What is 2 1/2 inches measured to the nearest quarter inch

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

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? )

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points