Christy spent 25 of her money on a shirt. She has $21.75 left. How much did she spend on the shirt? A. $8.70
B. $7.25
C. $14.50
D. $29​

Assuming you meant 25% of her money, the answer should be D - $29

Step-by-step explanation:

$29 * .25 = $7.25

$29 - $7.25 = $21.75

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No,The room is not a square shaped.This is because.Perimeter of the square shape would be length of any sides×4 as all sides will be the same in a square.Therefore, if the room ia a square, the 4 sides of room floor will be equal too.It is not a square shaped room beacause it sides are not equal for floor.We can determine by finding the sides;
diagonal is 18.75 so by using pythagoras theorem
diagonal^2 =l^2 + b^2
b^2=18.75^2 + 17^2
b =25.31 inches which is not the same as the length 17 inches.Therefore,the room is not a square