Answer:
The inequality will be: [tex]0<k<50[/tex]
Step-by-step explanation:
Nita will buy the keyboard when it is on sale for under $50.
That means, the price of the keyboard should be any positive value between 0 and 50.
If the price of the keyboard is [tex]k[/tex] dollars, then the value of [tex]k[/tex] will be greater than 0 and also less than 50.
Thus the inequality will be: [tex]0<k<50[/tex]