We have to translate "Seven subtracted from the product of 5 and a number is at least -28".
We start with the product of 5 and a number, which we will call "c":
[tex]5\cdot c[/tex]Seven substracted from the product 5c is equal to:
[tex]5c-7[/tex]This difference is at least -28, meaning that is equal or greater than -28:
[tex]5c-7\ge-28[/tex]We can solve this as:
[tex]\begin{gathered} 5c-7\ge-28 \\ 5c\ge-28+7 \\ 5c\ge-21 \\ c\ge-\frac{21}{5} \end{gathered}[/tex]Answer: the sentence is represented by 5c - 7 ≥ -28.
