Answer: 8 weeks
Step-by-step explanation:
Given : Stephen is tracking how many words per minute (wpm) he reads for reading class.
Equation: [tex]w = 112 + 8t[/tex], where t = time (weeks) and w = wpm
.
Then, the equation to find number of weeks (w), it will take Stephen to reach
171 wpm is given by :-
[tex]171=112+8t\\\\\Rightarrow\ 8t=171-112\\\\\Rightarrow\ 8t=59\\\\\Rightarrow\ t=\dfrac{59}{8}=7.375\approx8[/tex]
Hence it will take about 8 weeks Stephen to reach 171 wpm.
