I came across this question in Edge, "How much larger is the volume of the football compared to a table tennis ball? Use the volume of the table tennis ball recorded in table A to estimate the volume of the football. Rotate the football more if needed. Record your estimate of its volume in cm^3 in table B" The mass of the table tennis balls is 2.7, the radius 2.1, the volume 40 and the density 0.07. The mass of the football is 420, and it is 10 table tennis balls long and six wide

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )