Algebra Find the value of x. 15. 16. 17. 18. 19. 20. 54 5x 35 21. 22. 23. x + 9 3x 2x 4x + 20 10x-21

For the following exercises, consider the scenario: The profit of a company decreased steadily over a ten-year span. The following ordered pairs shows dollars and the number of units sold in hundreds and the profit in thousands of dollars over the ten year span (number of units sold, profit) for specific recordd years:(50,505),(52,490),(54,460),(56,445),(58,425)(50,505),(52,490),(54,460),(56,445),(58,425)a.a. Use linear regression to determine a function PP where the profit in thousands of dollars depends on the number of units sold in hundred, xx. Round your coefficients to the nearest tenth.

Your teacher recently found an old Nintendo in a thrift store. Use the formula to predictthe value of the Nintendo in 2020? (Remember, x is the years after 1986, and y is thevalue, in $.) Do you think this is a realistic prediction of the value of that Nintendo?  f(x)=3x2-40x+180, is the formula.

Can you please help me for this exercise and write the steps for me and circle the answer so that I can understand. That I can solve other exercises like this one.  Please note that in the last step, which is e, we must write down the final answer that I asked the question yesterday and you did not write down that I found it.

Can you show me all the steps to answer this type of question?