A phone company offers two monthly plans. Plan A costs $8 plus an additional $0.20 for each minute of calls. Plan B costs $23 plus an additional $0.15 for each minute of calls. For what amount of calling do the two plans cost the same? What is the cost when the two plans cost the same? URGENT HELP ⚠️

Letter b hope it

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle