You are buying a new phone and deciding between 2 phone plans. Plan A charges you a one-time fee of $630 for your phone, and then an additional $40 per month for the service. Plan B will charge you a one-time fee of $350 for your phone, then an additional $60 per month for the service. After how many months will the phone plans be equal in cost

4 puzzles in 3 hours

step-by-step explanation:

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.