Are x 2,4,6,8 and y 3,7,11,15 proportional or not proportional?

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !