Is my answers correct just want to be sure that my answers is right.

Yes 4/4= 1 whole hope this helps

Yes your answer is right but 4/4=1/1 can be written as just one

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. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.