Option C
For x = 1.5 we get f(x) = -2
Solution:
Given function is:
[tex]f(x) = 3.4x - 7.1[/tex]
We have to find the value of "x" so that f(x) = -2
Substitute f(x) = -2 in given function
[tex]-2 = 3.4x - 7.1[/tex]
Solve for "x" by moving the constants to one side and variables to other side
[tex]3.4x = -2 + 7.1\\\\3.4x = 5.1\\\\ \text{Divide both the sides of equation by 3.4 }\\\\x = \frac{5.1}{3.4}\\\\x = 1.5[/tex]
For x = 1.5 we get f(x) = -2
We can verify by substituting x = 1.5 in given function
[tex]f(1.5) = 3.4(1.5) - 7.1\\\\f(1.5) =5.1-7.1\\\\f(1.5) = -2[/tex]
Thus for x = 1.5 we get f(x) = -2
