Follow the instructions below to answer the questions.

l (10 points) Let :32 + 1:2 fix + 4;: - 3 = 0 be the equation of a circle. Find the center and radius of the circle by completing the squares. Sketch the graph of the circle. ) (10 points) A doctor's prescription calls for the creation of pills for a daily intake of liquid containing 40mg of vitamin C and 30mg of vitamin D. Your pharmacy stocks two liquids that can be used: One contains 20% vitamin C and 30% vitamin D; the other 40% vitamin C and 20% vitamin D. How many milligrams of each liquids should be nixed to ll the prescription? I (15 points) The menthly cost of driving a car depends 0n the number of miles driven. Lynn faund that in May her driving cost was $380 for 4801M. and in June her cost was $460 for SOUmi. (a) Express the monthly cost C in terms of the distance driven 3. assuming that a linear relationship gives a suitable model. (1)] Use the equation obtained in part (a) to predict the cost of driving lmi per month. (c) Draw the graph of the linear equation in part (a). (d) What does the slope of the line represent