During a free fall, a skydiver falls 16 feet in the 1st second, 48 feet in the 2nd second, and 80 feet in the 3rd second. If she continues to fall at this rate, how many feet will she fall during the 10th second? simple interest

Solve this problem! extra ! 3025/5.5 = a/90.75

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.