The sequence {7,9,11,13,15,…} can be represented by the recursive formula an=an−1+2 and the function f(n)=2n+5, for a particular domain. what is the domain of the function representing the sequence? a  d: n is any whole number b d: n is any natural number c d: n is any natural number greater than or equal to 7 d d: n is any real number greater than or equal to 2

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