The correct answer would be x = 4
She needs to score a 91 on her next test because 85+78+77+69+91=400 and 400 divided by 5 gives you a mean of 80.
Answer: B
Step-by-step explanation:
-3x^2-9xi+9ix-27
-3x^2-27
0.33 is rational 12 = Whole , real , irrational
