Respuesta :
Answer: The required number of hours that Iris worked is 7.
Step-by-step explanation: Given that Iris charges $50 for her consulting services plus $60 for each hour she works. On one job, iris charged $470.
We are to find the number of hours that Iris worked on the job.
Let x represents the number of hours for which Iris worked on the job.
Then, according to the given information, we have
[tex]50+60\times x=470\\\\\Rightarrow 50+60x=470\\\\\Rightarrow 60x=470-50\\\\\Rightarrow 60x=420\\\\\Rightarrow x=\dfrac{420}{60}\\\\\Rightarrow x=7.[/tex]
Thus, the required number of hours that Iris worked is 7.
