Sara pays $4300 for tuition and fees for each of the two semesters, plus an additional  $ 320 for textbooks each semester. the prorated monthly cost for tuition and fees and textbooks is $nothing . (round to the nearest dollar as needed.)

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.

Delta airlines or untied airlines