Answer:
Hence, Rashida will be paid $960 for 40 hour work.
Explanation:
Rashida was paid $720 for 30 hours of work.
that means the amount she is being paid fro 1 hour of work is:

Hence she is paid $24 for 1 hour work.
Now we have to find how much amount she is being paid for 40 hour of work:
Amount paid for 1 hour=$24
Amount paid for 40 hour=$ (24×40)=$960.
Hence, Rashida will be paid $960 for 40 hour work.