Step-by-step explanation:
-2.8 +2.4=-.4
-.4+7.8=7.4
7.8-2.8=5
i hope this helps ; )
Answer: 
Step-by-step explanation:
Given
Height of cylindrical cake is 
slice is removed
Volume of the slice is 
Area of slice is
Volume of slice will be multiplication of area and height
Hence, the radius of the cake is
Answer: $623
Step-by-step explanation:
calculation of Finance charge due on October 14
(+) $ 559 due on sep 14, $ 559 * (19.5*31) / (100 * 365) = $ 9.20
(+) purchase $ 289 on sep 19, $ 289 * (19.5*26 ) / (100 * 365) = $ 2.42
(+) finance charge on sep 28, $ 18 *(19.5*17 ) / (100 * 365) = $ 0.17
(-) Repayment on 25 sep , $ 250 * (19.5*20 ) / (100 * 365) = (2.745)
Total finance charges from 14 sep to 14 oct = $ 9.7= appr. 10
Amount due on 14 October = $559+$289+$15+$11.855- $250
= $ 623
