Respuesta :

Answer:  [tex](-\infty, 8)[/tex]

Step-by-step explanation:

Given the following inequality:

[tex]0.35x - 4.8 < 5.2 -0.9x[/tex]

You need to solve for "x" in order to find the solution.

The steps are:

1. Add [tex]0.9x[/tex] to both sides of the inequality:

[tex]0.35x - 4.8+0.9x < 5.2 -0.9x+0.9x\\\\1.25x-4.8<5.2[/tex]

2. Add [tex]4.8[/tex] to both sides:

[tex]1.25x-4.8+4.8<5.2+4.8\\\\1.25x<10[/tex]

3. Divide both sides by [tex]1.25[/tex]:

[tex]\frac{1.25x}{1.25}<\frac{10}{1.25}\\\\x<8[/tex]

Notice that "x" is  less than 8. This indicates that 8 is not included in the solution and you must use parentheses.

The solution in Interval notation is:

[tex](-\infty, 8)[/tex]

0.35 x - 4.8 < 5.2 - 0.9 x

0.35 x + 0.9 x < 5.2 + 4.8

1.25 x < 10

x < 10 : 1.25

x < 8

Answer:

B.  ( - ∞, 8 ).