PLEASE HELP ALGEBRA 1

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

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55