0.4(2x+1/2)=3[0.2x+(-2)]-4

Find the total area for the regular pyramid ( follow the answer set up in the picture)

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)

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.