if the length of each side of a square represented by 4x+1, which expression represents the perimeter?

Which value of c would make he following expression completely factored? 8x+cy

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

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?