This problem is about evaluating equations.
The given value is
[tex]x=2[/tex](A) For the first equation
[tex]y=7-3x[/tex]We replace the given value
[tex]y=7-3(2)=7-6=1[/tex]Therefore, the value of y in the first equation is 1.
(B) We do the same process to solve the second equation
[tex]y=x^2-1\rightarrow y=2^2-1=4-1=3\rightarrow y=3[/tex]Therefore, the value for y is 3, in the second equation.
(C) We repeat the process for the last equation
[tex]y=\frac{18}{x}\rightarrow y=\frac{18}{2}\rightarrow y=9[/tex]Therefore, the value of y is 9, in the third equation.
