The first step is to find out the value of one diaper for each equation
39.98/216 = 0.18
Therefore one diaper is for 0.18 cents
24.99/88 = 0.28
Therefore one diaper is for 0.28 cents
At the end the first deal is better
To find the box to the top left, we can multiple the sides like rectangles. To find the top left box, we can multiply -1 and 0.5y to get -0.5y.
To find the box on the bottom right, we can multiply the sides like rectangles again. To find the bottom right box, we can multiply 24x and 3 to get 72x.
If the exponent is a negative number, then you make it a fraction, with the exponent on top as a positive and the coefficient as a positive on the bottom AFTER you multiply, so what happens is if the coefficient has a negative exponent, you multiply the number by the exponent, make it positive, and put it under 1 as a fraction. So your answers are:
1/7
1/125
1/36
Hope this helps! Stay safe out there :)
Multiply 8.5 by 12, multiply 7.5 by 20, add them together to get 252, then divide that by 32 to get 7.875. 7.875 is the mean of all 32 measurements