Which of the following best describes the english expression the product of nine and a number minus five?
a. 9(x-5)
b. 9/x-5
c. 9x-5
d.9/x-5

C. 9x-5 because it's 9 times a number (x) and then you subtract 5

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.