Which pair of expressions is equivalent?
A) f + g + f + g and 2(f+g) B)2f + 4g - f-g and 2(f + g)
C) 0.5f + g + 1.5f - g and 2(f + g)
D) f-g+ f + g and 2(f + g)

Based on what i know about mean, this doesn't add up.

How many grams must be adde to 970g to make 1 and a half kg

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%