Ask Question
20 September, 07:09

A girl has scores of 79 , 70 , 78 , and 70 on her algebra tests.

a. Use an inequality to find the score she must make on the final exam to pass the course with an average of 72 or higher, given that the final exam counts as three tests.

+2
Answers (1)
  1. 20 September, 10:04
    0
    (3x+79+70+78+70) / 7 > = 72

    (3x + 297) / 7 > = 72

    3x + 297 > = 504

    3x > = 207

    x > = 69

    She must get a 69 or higher to pass with an average of 72 or higher.

    Check your work: 69+69+69+79+70+78+70/7 = 72

    Final exam = 3 times a regular test = 3x

    Average = (3x+79+70+78+70) / 7 (7 being the total number of tests)

    Has to be greater than or equal to 72
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A girl has scores of 79 , 70 , 78 , and 70 on her algebra tests. a. Use an inequality to find the score she must make on the final exam to ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers