Question

for several years, graham has gathered data on students who own a computer and on their performance on a typing speed test. he creates the linear model \\(y = 3.8x + 17.4\\) where \\(y\\) represents the typing speed, in words per minute, of a student and \\(x\\) represents the number of years the student has owned a computer. according to grahams model, what is the approximate speed of a student who has owned a computer for three years?

21 words/min
29 words/min
56 words/min
64 words/min

Explanation:

Identify the given linear model and variable values

$$
LATEXBLOCK0
$$

Substitute the value of x into the linear equation

$$
LATEXBLOCK1
$$

Round to the nearest whole number to match the options

$$ y \approx 29 \text{ words/min} $$

Answer:

• 21 words/min
• 29 words/min (Correct answer)
• 56 words/min
• 64 words/min