What’s the answer to this ?

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?