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Algebra

posted by on .

Solve
3x +1 < 5 or 3x +1 > 4

By saying "solve," is it asking for me to show it on a line and in interval notation?

Here's another:

f(x) < 3 and f(x) > 4, where f(x) = 1/2x - 7

I have no idea how to solve this! Please walk me through it!

Thank you so much!

  • Algebra - ,

    I will do one.

    The second..
    1/2 x-7<3
    1/2 x<10
    x<20

    1/2 x-7>4
    1/2 x >11
    x>22
    so here x is less than 20 or greater than 22

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