Question

5. The function w(x) = 70x represents the number of words w(x) you can type in x minutes. SHOW ALL WORK!!a.) How many words can you type in 5 minutes?b.) How many words can you type in 8 minutes?c.) How long would it take to read 280 words?

Answer 1

The given function is

$w(x)=70x$

Where x is minutes.

(a) To find the number of words typed in 5 minutes, we just need to replace the variable for 5 and solve

$w(5)=70(5)=350$

Therefore, there are typed 350 words in 5 minutes.

(b) We do the same process for 8 minutes.

$w(8)=70(8)=560$

Therefore, there are typed 560 words in 8 minutes.

(c) To find the type for 280 words, now we replace the other variable w(x), and solve for x

$280=70x$

We divide the equation by 70

$\frac{280}{70}=\frac{70x}{70}\rightarrow x=4$

Therefore, 280 words take 4 minutes.