Which of the following is the most reasonable estimate for the length of a spring when 20 weights are attached

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.

If your asking how much altogether for 12 performance the answer will be 98,496.