53 + 9x < 115
THE LESS THAN SYMBOL SHOULD HAVE A LINE UNDER IT!
Answer: 11
Step-by-step explanation: 
Answer:
It's C.
Step-by-step explanation:
√(30) to the power of 2 is equal to 30.
Answer:
the statements are not equivalent
mean = sum/n
mean = (5 + 7 + 7 + 9 + 12 + 16 + 21)/7
mean = 77/7
mean = 11