Two different antibiotics can be used to treat an infection. treatment with antibiotic 1 is known to be successful 80% of the time. this treatment costs $80. antibiotic 2 is successful 90% of the time and costs $100. the two treatment plans are: plan a: treat with antibiotic 1. if not effective, treat with antibiotic 2. plan b: treat with antibiotic 2. if not effective, treat with antibiotic 1. based on the data provided, what is the probability that a patient treated under plan a will be successfully treated?
a. 0.98
b. 0.72
c. 0.80
d. 0.90

Read the excerpt from the strange case of dr jekyll and mr. hyde what do dr. jekyll's thoughts reveal about him in this excerpt? [t]he inmates of my house were locked in the most rigorous hours of slumber, and i determined, flushed as i was with hope and triumph, to venture in my new shape as far as to my bedroom. i crossed the yard, wherein the constellations looked down upon me, i could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to he is jealous of those who can sleep through the night. he is revered for his scientific advances. he is interested in studying the movements of the stars he is proud and enthusiastic about his initial results.

What is the value of x? enter your answer in the box.

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.