SOLUTION: I'm totally stuck.
In your general biology class, your first three test scores are 67, 77, and 84. What is the lowest score you can get on the fourth test to earn a B for the co
Algebra ->
Inequalities
-> SOLUTION: I'm totally stuck.
In your general biology class, your first three test scores are 67, 77, and 84. What is the lowest score you can get on the fourth test to earn a B for the co
Log On
Question 127017: I'm totally stuck.
In your general biology class, your first three test scores are 67, 77, and 84. What is the lowest score you can get on the fourth test to earn a B for the course? Assume each test is of equal weight and a B is any score greater than or equal to 80.
Thanks!! Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! (67+77+84+x)/4>=80
(228+x)/4>=80 now cross multiply
228+x>=320
x>=320-288
x>=92 is the minimum score reaured to maintain an average >=80 on these 4 tests.
PROOF:
(67+77+84+92)/4>=80
320>=320
(