4friends participated in a speed typing contest. who has the slowest typing speedf1: 320 words in 8 minutesf2: 403  words in 10 minutesf3: 474 words in 12 minutesf4: 567  words in 14 minutes

As per the problem

4 friends participated in a speed typing contest.

And the words per minute is as below:

F1: 320 words in 8 minutes

It mean the words per minute is

F2: 403 words in 10 minutes

It mean the words per minute is

F3: 474 words in 12 minutes

It mean the words per minute is

F4: 567 words in 14 minutes

It mean the words per minute is

On comparing the number of words per minutes in all the above cases we observe that F3 has the slowest Typing speed.

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )