An air traffic controller is tracking two planes. To start, Plane A was at an altitude of 1200 meters, and Plane B was at an altitude of 816 meters. Plane A is gaining altitude at 10 meters per second, and Plane B is gaining altitude at 18 meters per
second.
Let x be the number of seconds that have passed.

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation:

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day

i believe it's a.

i'm not sure on this one, most likely correct.