4. This is simple the answer would be C. 60 because if you divide 9 by 1.50 you would get 6, so then you would need to multiply 6 by the number of erasers which is 10. So, 6 times 10 is 60.
5. This answer would be A. 1700 because (17 x 4) is 68 and 68 times 25 is 1700.
Lets get an example, for this example lets use 24/30 x 30/60 Without dividing out GCFs you would get 24x12 over 30 x 60 which is 288/1800 With dividing out GCFs you get 2/1 x 5/1 Which is 7 :)
You're given the center and a point on the circle. The point and the center both have an x-coordinate of -5, so there is no horizontal distance between them. The distance is only in the vertical direction. The distance from 8 to -4 is 12. Since this is the distance from the center to a point on the circle, this equals the radius.