Alan sells custom made kites online. he makes a flat profit of $20 per kite, but he pays $20 per day for his website. write an inequality that aives the number of kites alan needs to sell to make at least $900 per week?

20x+20y=900
I hope that helps. You'll have to isolate each variable. X= kite, y=website.

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post