Question

A car rental company

Answer 1

220/4=55 per day
55*7=385

Answer 2

Answer:  385 dollars

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Work Shown:

(220 dollars)/(4 days) = (x dollars)/(7 days)

220/4 = x/7

220*7 = 4*x

1540 = 4x

4x = 1540

x = 1540/4

x = 385

It costs $385 to rent a car for a full week (7 days)

If your teacher considers a week to be 5 days (ignoring the weekends), then you'll need to solve 220/4 = x/5 instead. That would lead to x = 275. I have a feeling that your teacher might want 7 days though.

Side note: In the jump from step 2 to step 3, I used the cross multiplication rule.