Hi, i don’t understand these. you don’t have to do all of them just 1 and 4 so i can see the difference between intersections and unions

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

You have 3 boxes, one "strawberries"; one "mentos" and one "mixed".but you know that all the labels are in incorrect order .how do you know witch is witch?