A parking manager recorded the number of cars in a city parking lot. She found that 90% of the parking spaces in the lot were occupied. If there are 30 spaces in the parking lot, how many are occupied with a car?

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?