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

29 words/min

Step-by-step explanation:

From the linear model created by Graham, typing speed of a student is a function of a constant value and the number of years the student has owned a computer.

Given that 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, for a student who has owned a computer for 3 years,

x = 3 as such,

y = 3.8(3) + 17.4

y = 11.4 + 17.4

y = 28.8 words per min

Hence the right option is 29 words/min

b

step-by-step explanation: