7. Freight car loadings over a 12-year period at a busy port are as follows: Week Number 1 350 2 360 3 400 4 380 5 420 4

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7 Freight Car Loadings Over A 12 Year Period At A Busy Port Are As Follows Week Number 1 350 2 360 3 400 4 380 5 420 4 1 (50.56 KiB) Viewed 12 times

7. Freight car loadings over a 12-year period at a busy port are as follows: Week Number 1 350 2 360 3 400 4 380 5 420 450 16 Number 220 245 280 275 300 310 Week 7 8 9 10 11 12 Week 13 14 15 16 17 18 a. Determine a linear trend line for expected freight car loadings. b. Use the trend equation to predict expected loadings for weeks 20 and 21. Number 460 475 500 510 525 541 c. The manager intends to install new equipment when the volume exceeds 800 loadings per week. Assuming the current trend continues, the loading volume will reach that level in approximately what week?