Answer the question in the pic pls. Don’t answer unless you are sure if your answer

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x