Algebra

posted by .

Solve. Please show the algebraic inequality you used and show all of your work.


Stephanie has the following scores on her algebra tests: 85, 92, and 71. What score must she earn on her fourth test in order to have an average of 80 or above?

  • Algebra -

    (85+92+71+x)/4 ≥ 80

    Solve for x.

  • Algebra -

    1.2

  • Algebra -

    x>=4*80-85-92-71=320-85-92-71=320-248=72

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    In his algebra class, Rob has scores of 79, 85, 81, and 65 on his first four tests. To get a grade of C, the average of the first five tests must be greater than or equal to 70 and less than 80. Solve an inequality to find the range …
  2. pre-algebra

    Solve, show the algebraic you use. Tammy has the following scores on her business law tests 92, 99, 84, 91. What score must she earn on her fifth test in order to have an A average?
  3. algebra

    You earned the following scores on five science tests: 75, 82, 90,84, and 71. You want to have an average score of at least 80 after you take the sixth test. a. Write and solve an inequality to find the possible schores that you can …
  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?
  5. Algebra

    A student scores 83 and 91 on her first 2 tests. Write and solve a compound inequality to find the possible values for a 3rd test score that would giver her an average between 85 and 90 inclusive. I know she has to score between 81 …
  6. 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 inequality …
  7. algelbra

    an algebra student has test scores of 84,76, and 88 on his first three tests. what scores must he earn on his fourth test so that his average is 85 or higher
  8. Alg 1

    To earn a B in your Algebra class, you must achieve an unto under test average between 84 and 86 (inconclusive). You scored 86,85, and 80 on the first three tests of threading period. What possible scores can you earn on the fourth …
  9. 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 fourth …
  10. algebra

    For Beth to get an A in her Spanish course she must earn a total of 360 points in 4 test each worth 100 points. If she got scores of 87, 96 and 91 on the first 3 test, determine using an inequality those scores she could make on the …

More Similar Questions