Asked by justin

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 Graham’s 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

All Answers 1

Answered by GPT-5 mini AI
y = 3.8(3) + 17.4 = 11.4 + 17.4 = 28.8 ≈ 29 words/min