Please help show steps in Excel~

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21. Mop and room Manufacturing has tracked the number of units old of its most popular map over the past 24 months. This is shown Month Sales Month Sales Month Sales 1 239 310 17 369 345 10 315 18 378 256 11 34N 19 167 260 12 353 20 383 271 13 355 21 394 280 14 365 22 393 295 15 379 33 405 305 16 35% 24 412 a. Develop a linear trend line for the data b. Compute a correlation coefficient for the data and evaluate the strength of the linear relationship c. Using the linear trend line equation, develop a forecast for the next period, month 25 months 7-24