Answer:
Following are the solution to this question:
Step-by-step explanation:
The new rate is just [tex]\$ \ 175[/tex] per month, let's call it rate A:
[tex]\to A = 175[/tex]
The new price is [tex]\$ \ 94[/tex] plus[tex]\$ \ 4.50[/tex] per device and let us name it rate B:
[tex]\to B = 93 + 2.40 \ x[/tex]
Here x is the number of service devices, In order to find x, the formula of inequalities is less than the current plan:
[tex]\to 94 + 4.50\ x < 175[/tex]
Solve the value for x:
[tex]\to 4.50\ x < 81 \\\\ \to x < 18[/tex]
There are also less than 18 units.