The half-life of morphine in the human bloodstream is 3 hours. Initially there is 0.4 mg in the blood stream A) find an equation for the amount of morphine at any time K
B) how long until the amount in the bloodstream is 0.7mg

What is the solution to the equation 9^(x+1) =27

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount