Let f(x)=(x-2)^2 find a domain on which f is one-to-one and non-decreasing

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?

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

What is the y-intercept of the line given by the equation