What does -4<-8 mean? thank you! :)

The function models the number of accidents

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921