Algebra
posted by Harper .
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!

I will do one.
The second..
1/2 x7<3
1/2 x<10
x<20
1/2 x7>4
1/2 x >11
x>22
so here x is less than 20 or greater than 22