When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates.
Given money earned in 2 weeks is $2350.
To get money earned in 1 week, we need to divide income with number of weeks.
That is money earned in 1 week=[tex]\frac{money earned}{no.of weeks}[/tex] = [tex]\frac{2350}{2} = 1175$[/tex]
Hence unit rate is $1175 per 1 week.