Answer:
2.25
Step-by-step explanation:
You could just use a calculator.
15.1 to nearest tenth.
The 7 is the lowest number so the mean would increase if taken away.
New mean = (8 + 12 + 13 + 15 + 18 + 19+21) / 7
= 106 / 7
= 15.14
5x+3
consider marking as Brainliest if this helped
x=64
