Which statement is correct about the values of x and y in the following equation?
7x+xy = xy+21
a) the equation is true for all ordered pairs (x, y)
b) there are no (x, y) pairs for which this equation is true.
c) for each value of x, there is one and only one value of y that makes the equation true.
d) for each value of y, there is one and only value of x that makes the equation true.

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

x = 12

y = 1

for the points!

6. 104

7. 52/37

8. 2704

9. 140608

10. -52

11. |52|=52

12. 1/52

13. 156

14. 26

15. 40

16. 37

17. -364

18. 53 1/3

19. 50.96

20. 43 2/3

21. 78

22. 50.75

23. 47.63

24. 163.28

25. 10400

26. 338

27. 208

28. 2704 square inches

29. 312 square meters

30. don't know what its asking, tell me so i can tell you

31. 8490.56

32. 52 degrees would be an acute angle

33. 128 degrees

34. 20.8

35. 39

36. 208