Question

I need help on this one too
Will give 100 points!

Answer 1

$\\ \sf\longmapsto 11x+13x+10<150$

So

$\\ \sf\longmapsto -150<11x+13x+10<150$

• Parents gave you 300$

Add them on all sides

$\\ \sf\longmapsto 150<23x+310<450$

Done