What is the domain of the step function f(x)= [2x] -1

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

What numbers are included in the set of integers? what numbers are not included?