a measurement using a ruler marked to an eighth of an inch is reported as 3 1/2 inches. what is the range of values for the actual measurement?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

How do i i solve this equation? -18 = x/3 + 3

Which function has an inverse that is also a function? a.{(-4,3), (-2, 7), (-1,0), (4, -3), (11, -7)} b.{(-4, 6), (-2, 2), (-1, 6), (4,2), (11, 2)} c.{(-4,5), (-2, 9), (-1,8), (4, 8), (11,4)} d.{(-4,4), (-2, -1), (-1,0), (4, 1), (11, 1)}