An adult takes 400 mg of vitamin C. Each hour, the amount of vitamin C in the person's system decreases by about 29%. A. Write an exponential function to represent this situation.
B. How many vitamins how much Vitamin C is left after 6 hours? Round your answer to the nearest hundredth

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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