13. If ax + bx - 9 =(x - k)(2x+k) and b>0
then k is equal to...
please please help! :))

Write a real-world solution that can be represented by the equation y = 7x be sure to explain what the variables represented in the solution

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.