Answer:
All you have to do is to the distributive method.
Step-by-step explanation:
(7x+14)(9x-8)
I believe 22. Because 11+3=14, but without that, you would add 11 to 11, which gives you 22
5 meters. The area of the sidewalk has to be 10 meters and has to contain the 20 meter sandbox. The total area is thirty meters, so the length and width of the sidewalk is 6x5