Determine whether quantities vary directly or inversely and find the constant of variation. how much does 3.25m of silk ribbon cost if 0.8m costs $5.60?

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)

A50% increase followed by 33 1/2% decrease

Steve had 48 chocolates but he decided to give 8 chocolats to each of his f coworkers. how many chocolates does steve have left