Mrs. Roberts has one of her students do a probability demonstration. The student uses tape to mark a line on the floor and spins a top in the middle of the line. He then records whether the top stops to the left or to the right of the line.

This is repeated 40 times, with the results shown in the table.

What is the RELATIVE FREQUENCY that the top STOPS TO THE LEFT of the line?

Add the cents that add the left overs to get the first number

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 : )