Answer :
We are told that Johnathan works on IXL and learns new skills per week.
If Johnathan learns x new skills and he works y nights per week, the number of skills he masters per night, N, can be gotten using the equation:
[tex]N=\frac{x}{y}[/tex]From the question, we know that Johnathan works 5 nights per week and masters 7 skills over the week. This means that, for our equation, we have the following parameters:
[tex]\begin{gathered} x=7 \\ y=5 \end{gathered}[/tex]Hence, we can calculate the number of skills mastered per night to be:
[tex]N=\frac{7}{5}=1.4[/tex]Therefore, Johnathan masters 1.4 skills per night.