Stacy made a necklace using 4 times as many blue beads as red beads. she used a total of 40 beads. how many blue beads did stacy use?

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)

Which is the graph of this function 3 square root of x plus one if

The answer is 7.2 how would you put this as money