I think you divide 18.96 by 3 to get the amount for one pound cost then go pound for pound there
8x - 9y = 11 (subtract 8x from each side)
- 9y = -8x + 11 (divide -9 from each side)
y =
D. 
Put the first point on the m axis (vertical) at (0,250)
Then the second point at (1,225) then draw a line through both points
Multiply the hourly wage by how long she worked. You get the equation
$11.75 times 21
This equals $246.75, which is the solution.
$246.75
Answer:
Since the question is why 1953125 is not a square number, you don’t need a test for perfect squares, you only need something that shows this particular number is not a perfect square.
One starting test for showing a number will NOT be a perfect square is to use “casting out 9’s”. Remove any digits that are 9 or that add up to 9.
Thus: 1953125 becomes 153125 (removing 9) which then becomes 125 since 1+5+3=9. [OR: 53, since 1+1+2+5 = 9] [OR: 35]
(Note that you can repeat the whole process until you have cast out all 9s.)
Examine the number that is left. If it is not a perfect square, then the original number cannot be a perfect square.
125 is not a perfect square [nor is 53 or 35], so 1953125 cannot be a perfect square.
