ALGEBRA

Ralph needs to earn a B in his Geology class. His current test scores are
82,83, 90, and 77. His final exam is worth
4 test scores. In order to earn a B​,
Ralph's average must lie between
80 and 89 inclusive. What range of scores can Ralph receive on the final exam to earn a
B in the​ course?

  1. 👍
  2. 👎
  3. 👁
  1. 80 ≥ (4t + 82 + 83 + 90 + 77) / 8 ≥ 89

    1. 👍
    2. 👎
  2. it works better if you use <=

    1. 👍
    2. 👎
  3. oops...

    89 ≥ (4t + 82 + 83 + 90 + 77) / 8 ≥ 80

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    In your​ class, you have scores of 73,85,76, and 92 on the first four of five tests. To get a grade of Upper C, the average of the first five tests scores must be greater than or equal to 70 and less than 80. a) Solve an

  2. Math

    When a class took a math test, 15% of the class failed, 25% made some mistakes (but didn’t fail), and 24 students got perfect scores. How many students were in the class?

  3. Alg 1

    To earn a B in your Algebra class, you must achieve an unrounded test average between 84 and 86 (inconclusive). You scored 86,85, and 80 on the first three tests of the grading period. What possible scores can you earn on the

  4. Algebra 1

    In order to earn an A in a class, your test scores must average at least 92%. On the first 6 tests, you have an average of 91%. What score do you need to get on the last test to earn an A? Show your work.

  1. Statistics

    18. The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a standard deviation of 15. Given a class with 25 students, what is the probability that the class' average IQ score is between 85 and

  2. Algebra

    A student in a Pre-Calculus class has test scores of 70, 73, 61, and 79. The final exam is worth 2 test grades. Write a linear equation that models this problem, where x is the grade on the final exam and y is the student's grade

  3. agl 1

    Your test scores in one class are 81 and 85. What possible scores can you earn on your next test to have a test average between 83 and 88, inclusive?

  4. Math

    Gail needs to earn a B in her Geology class. Her current test scores are 89, 78, 77, and 85. Her final exam is worth 3 test scores. In order to earn a B, Gail's average must lie between 80 and 89 inclusive. What range of scores

  1. College Algebra

    In your class, you have scores of 85, 84, 67, 92 on the first four of five tests. To get a grade of C, the average of the first five test scores must be greater than or equal to 70 and less than 80. Solve an inequality to find the

  2. statistics

    the admissions policy at a certain university requires that incoming students score in the upper 20% on a standardized test. if the mean score on the test is 510 and the standard deviation of the scores is 80, what is the minimum

  3. statistics

    10.51 A statistics professor compared the scores of her morning class and afternoon class on the same quiz. The 42 morning students’ average score was 83.52 with a standard deviation of 7.81, while the 46 afternoon students’

  4. Algebra

    Your test scores in one class are 81 and 87. What possible scores can you earn on your next test to have a test average between 84 and 89, inclusive?

You can view more similar questions or ask a new question.