Juan is considering two cell phone plans. The first company charges $120.00 for the phone and $30 per month for the calling plan that
Juan wants. The second company charges $40.00 for the same
phone, but charges $45 per month for the calling plan that Juan
wants. After how many months would the total cost of the two plans
be the same?

In the following diagram it is given that dec, ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2