My immediate backyard is 50 ft by 100 ft. I have a 24 foot diameter pool in the middle of the yard. How many square feet of the backyard is not covered by the pool?

Me. i can't figure out this question. give an explanation too. .

If the tip varies directly with the number of guest which equation represents between the tip, t, and the number of guest, g?

Arectangular garden is 5 feet long and 3 feet wide. a second rectangular garden has dimensions that are double the dimensions of the first garden. what is the percent of change in perimeter from the first garden to the second garden?