An airplane takes off from SFO and ascends at a rate of 100 feet per minute. Another airplane is at an altitude (height from the ground) of 3000 feet and is descending at 50 feet each minute. When will the airplanes be at the same altitude and what will their altitude be?​

the correct answer is b.

this is because an open circle means < or > & since the line goes left it is < -3.

the next one has a filled circle so it can only be ≥ or ≤ and since the line goes right from 1 it is ≥ 1

hope that

can someone me: the midsegment through the legs of an isosceles triangle is 4 in. find the sides of the triangle if its perimeter is 20 in. ,   and point g is the centroid of the right △abc with hypotenuse ab=18 in. find cg.