math,correction

posted by .

can someone correct this for me please.

Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C grade.
Total marks in 3 test 75+63+68 >= 206
Let score in the last test = x
Total score in 4 test = 206 + x
Average in 4 test = A >=(206 + x) / 4
A>= 70

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math correction

    can someone correct this for me.or teach me if i'm wrong Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing …
  2. math

    Ted must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75, 63,and 68. Write an inequality representing the score that Ted must get on the last test to get a C grade. Let …
  3. algebra

    Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. write an inequality representing the score that sam must get on the last test to get a C grade http://www.jiskha.com/display.cgi?
  4. algebra

    Sam must have an average of 70 or more in his summer course to obtain a grade of C. His firs three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C grade.
  5. math

    If you earn the grades of 81, 84, 78, 80 in four tests what should your final test’s score be in order to have an average of 81%?
  6. math

    Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?
  7. Math

    Jeremy got scores of 93,82,91, and 88 on his first four math test. What score must he get on the fifth test to have an average test grade of 90 for the five test ?
  8. math

    jim has grades of 84, 65, 76 on three tests. what grade must he obtain on the next test to have an average of exactly 80% for all four tests?
  9. Maths

    Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?
  10. Math

    To pass a course with a C grade, a student must have an average of 70 or greater. A students grades on three tests are 63, 76, 67. Find what score the student must get on the next test to get a C average or better

More Similar Questions