Which is a unit rate? A. 30 pounds per 4 months

B. 5 feet in 1 second

C. 45 people for 2 cars

D. 180 students to 5 teachers

B. 5 feet in 1 second

Step-by-step explanation:

A unit always has to have 1 as the denominator, and the only option with 1 as part of the statement, is option B.

I hope this helps!

The answer is 270 cars.you can do this by making a proportional relationship. for instance, 200 is the whole we are using, so on a “number line” 200 would be over 100%. now, since he sells 35% more, add 35% to 100% to get 135% on the other side of the “number line” on the bottom half, leaving the top half empty.cross multiply 200 by 135 then divide by 100 to get your answer. i hope this , if it did, , if you don’t mind, giving me brainiest! 200/100% } 200 • 135 /100 ? /135%

Set up a system of equations