Question

I dont understand the question for D can someone please explain it ​

Answer 1

71°

Explanation:

The average temperature is calculated as

Average =
`(sum)/(count)`

let x be the temperature in October, then

`(25+70+65+85+92+82+x)/(7)` = 70, that is

`(419+x)/(7)` = 70 ( cross- multiply )

419 + x = 490 ( subtract 419 from both sides )

x = 71

Average temperature in October was 71°