John must have at least 289 test points to pass his math class. he already has test scores of 72, 78, and 70. which inequality will tell him  at least  how many more points he needs to pass the class?                 a.  72 + 78 + 70 +  x  ≤ 289      b.  72 + 78 + 70 +  x  > 289      c.  72 + 78 + 70 +  x  < 289      d.  72 + 78 + 70 +  x  ≥ 289