Answer:
[tex]x=-4[/tex]
Step-by-step explanation:
We are given the function:
[tex]f(x)=2x+7[/tex]
And we want to find x when f(x) = -1.
Substitute:
[tex]-1=2x+7[/tex]
Subtract seven from both sides:
[tex]2x=-8[/tex]
Divide both sides by two. Hence:
[tex]x=-4[/tex]
