Question 1096368: Eric has scores of 71,81,& 85 on his history tests. Use an inequality to find the scores he can make on his final exam to receive a B in the class. The final exam counts as three tests, & a B is received if the final course average is greater than equal to 80
Found 2 solutions by Alan3354, ankor@dixie-net.com:
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Eric has scores of 71,81,& 85 on his history tests. Use an inequality to find the scores he can make on his final exam to receive a B in the class. The final exam counts as three tests, & a B is received if the final course average is greater than equal to 80
-----------
F = score on final
-------
(71 + 81 + 85 + F + F + F)/6 >= 80
Solve for F
Answer by ankor@dixie-net.com(22740)  (Show Source):
You can put this solution on YOUR website! Eric has scores of 71,81,& 85 on his history tests.
Use an inequality to find the scores he can make on his final exam to receive a B in the class.
The final exam counts as three tests, & a B is received if the final course average is greater than equal to 80
:
let f = the score on final test
 => 80
multiply both sides by 6
237 + 3f => 6(80)
3f => 480 - 237
3f => 243
f => 243/3
f => 81 to get at least a B
|
|
|
