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Math·Algebra·Linear inequalities in one or two variables

easy

To win a game show, a contestant needs to score at least 80 total points from two rounds. Correct responses in the first round are worth 4 points each, and correct responses in the second round are worth 5 points each. Which inequality models this situation, where $f$ is the number of correct responses in the first round and $s$ is the number of correct responses in the second round?

A

$f+s\le 80$

B

$4f+5s\ge 80$

C

$5f+s\ge 80$

D

$5f+4s\le 80$