toy trucks are made in a factory the toy trucks are made for 17 hours each day 20 toy trucks are made every 15 seconds for the toy trucks made each day the probability of a toy truck being faculty is 0.09 workout an estimate of the number of faculty toy trucks that are made each day

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 : )

Iam unsure about what the proof is, therefore as much as wish to i can not.