you spend a total of 25 minutes typing an email and writing a letter. you can type 6o words a minute and write 20 words a minute. let m be the minutes you type the email. write an expression in terms of m for the total number of words you wrote. evaluate the expression if you spend 10 minutes typing. help please. i came up with 60m+20(10-m)=

words= 60*(timetyping)+20(25-timetyping)

= 40(time typing)+500

Now at 10 min typing, that is 900words.

To find the expression in terms of m for the total number of words you wrote, we need to calculate the number of words typed in the email and the number of words written in the letter separately.

For typing the email, the rate is 60 words per minute, so in m minutes, you would have typed 60 * m words.

For writing the letter, the rate is 20 words per minute, so in (10 - m) minutes (since you spent a total of 10 minutes and m minutes typing the email), you would have written 20 * (10 - m) words.

The total number of words you wrote would be the sum of the words typed in the email and the words written in the letter:

Total words = 60m + 20(10 - m)

To evaluate the expression when you spend 10 minutes typing, substitute m = 10 into the expression:

Total words = 60 * 10 + 20(10 - 10)
Total words = 600 + 20 * 0
Total words = 600

Therefore, if you spend 10 minutes typing, you wrote a total of 600 words.