Which pair of undefined terms is used to define the term parallel lines

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

Is the underlined participial phrase correctly placed or misplaced? i smelled each and every flower strolling through the garden. a. correctly placed participial phrase b. misplaced participial phrase