PLEASE HELP! TRYING TO COMPLETE WITHIN 30 MINS in an arithmetic sequence, a1 = 2x + 1, a2 = x + 11, and a3 = 4x + 5
how would i format the sequence? (or if it's easier, what is the r value?) i keep struggling with forming the proper one

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Alogical argument that is presented in graphical form using boxes and arrows is called?