I need help with a few sentences

[rippaman77]

I have a paper to turn in tomorrow. There are three sentences that I'm not sure are correct. Can you please check them for me? Thank you alot for the help

That is to say, while the big businesses and developers were on a rise, there were many residents on the fall.

Along with the city’s financial backing, the developers receive benefits from an expected business boom that will increase their land value.

The mall will consist of powerhouse corporations, such as an H&M clothing store and a Marshall’s, that will rise land prices giving developers an edge.

[Tdol]

their land value- the value of their land
will rise- raise
prices giving- prices, giving

[smelvanzq]

Hello! is it really
raise than will rise?
I'm confused

tnx

[Tdol]

Yes, it's raise because something is controlling it- the mall and the corporations.
Prices rise. (intransitive- no object_
People raise prices. (tranisitive- has an object)

[smelvanzq]

OIC! cool!

[Tdol]

Remember it if you're going to be taking test- examiners use it repeatedly.