Question

f/2-22<48, I want to know what f equals. Worth 30 points.

Answer 1

$\frac{F}{2} -22\ \textless \ 48 \\ \frac{F}{2} \ \textless \ 48+22 \\ \frac{F}{2} \ \textless \ 70\ \ \ \ \ \ \ \ \ |*2 \\ F\ \textless \ 140 \\ \\ \boxed {F\in(-\infty\ ;\ 140)} \\ \\ \\ \\ \\ \\ \underline {\underline{Regards\ M.Y.}}$