How would I solve these two problems Tell me each step as I don't really understand how to work these out. Thank you!

Investing: Lesser-Known Stocks The following question is based on the following information about the stocks of Whitestone REIT, Tokio Marine Holdings, Inc., and Seagate Technology Holdings PLC. + Price Dividend Yield Skills ($ ) (%) WSR 10 (WSR Whitestone REIT) TKOMY 53 4 (Tokio Marine Holdings, Inc.) STX 84 (Seagate Technology Holdings PLC) 3 You invested a total of $11,000 in shares of the three stocks at the given prices, and expected to earn $398 in annual dividends. If you purchased a total of 300 shares, how many shares of each stock did you purchase? WSR -27714 X shares TKOMY lay 66614 x shares STX -38600 * shares Show My Work (Optional) ? Submit Answer 23. [0/4 Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 4.3.021. MY NOTES Internet Audience At the end of a certain year, the four companies with the largest number of home Internet users in the United States were Microsoft, Time Warner, Yahoo, and Google, with a combined audience of 284 million users. Taking x to be the Microsoft audience in millions, y the Time Warner audience in millions, z the Yahoo audience in millions, and u the Google audience in millions, it was observed that Z - U = 3(x - y) + 20 EST x + y = 44 +z+u and x - y + z - U = 44. How large was the audience of each of the four companies at the end of that year? Microsoft 69.3+1.7u * Your answer cannot be understood or graded. More Information Time Warner Yahoo Google free X