PLEASE HELP WITH THE SECOND QUESTION!
I'LL MARK BRAINLIEST!

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)

Acompany specializes in converting people's vhs movies and dvds to digital formats, which, once converted are approximately 4.5 gigabytes in size. once converted, the company uploads the videos to a secure cloud drive, where the customers can retrieve their files. the company uploads the videos every day, from closing time at 5: 00 pm until 9: 00 pm. their internet service provider, has an upload speed of 12 megabytes per second. what is the maximum number of videos the company can upload each evening? (1 gigabyte = 1,024 megabytes) a) 2 b) 37 c) 242 d) 682