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A student scored 67, 88, and 96 on three algebra tests. What must he score on the fourth test in order to have an average grade of at least 85?

Respuesta :

mhanifa

At least 89

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Set up the equation:

  • (67 + 88 + 96 + x) / 4 ≥ 85,

where x is the score on the fourth test

Solving this inequality, we get:

  • 251 + x ≥ 85*4
  • 251 + x ≥ 340
  • x ≥ 340 - 251
  • x ≥ 89

Therefore, the student must score at least 89 on the fourth test.

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