The scores Brianna earned on 4 of the 5 science tests she has taken so far this year are listed 95 90 85 She wants mean all her test to be What does need score?

Let \(x\) be Brianna's score on the last test. The mean of her 5 test scores is:

$$\frac{95+90+85+x}{5}$$

She wants her mean score to be 95, so:

$$\frac{95+90+85+x}{5}=95$$

Multiply both sides by 5:

$$95+90+85+x=475$$

Combine like terms:

$$270+x=475$$

Subtract 270 from both sides:

$$x=205$$

Therefore, Brianna needs to score 205 on her last test to have a mean score of 95.