Ireally really really need the answer you guys this is so important < 3< 3< 3 will give 20 points joe went to a fast food restaurant and bought 4 orders of fries and 2 burgers for $14. becca went to the same fast food restaurant and bought 3 orders of fries and one burger for $9. question(s): 1. write a system of equations that models this situation. let x represent orders of fries and y represent burgers. 2. graph the two equations that models this situation and solve the systems using the graph. let x represent the fries and y represent the burgers and find out how much each order of fries and burgers cost.3. use elimination to find out how much an order of fries and a burger cost. guys i really need this asap < 3 so much( give correct answers)

Overproduction of uric acid in the body can be an indication of cell breakdown. this may be an advance indication of illness such as gout, leukemia, or lymphoma.† over a period of months, an adult male patient has taken nine blood tests for uric acid. the mean concentration was x = 5.35 mg/dl. the distribution of uric acid in healthy adult males can be assumed to be normal, with σ = 1.87 mg/dl. (a) find a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. what is the margin of error? (round your answers to two decimal places.) lower limit upper limit margin of error (b) what conditions are necessary for your calculations? (select all that apply.) σ is unknown n is large σ is known normal distribution of uric acid uniform distribution of uric acid (c) interpret your results in the context of this problem. there is not enough information to make an interpretation. the probability that this interval contains the true average uric acid level for this patient is 0.05. the probability that this interval contains the true average uric acid level for this patient is 0.95. there is a 95% chance that the confidence interval is one of the intervals containing the population average uric acid level for this patient. there is a 5% chance that the confidence interval is one of the intervals containing the population average uric acid level for this patient. (d) find the sample size necessary for a 95% confidence level with maximal margin of error e = 1.10 for the mean concentration of uric acid in this patient's blood. (round your answer up to the nearest whole number.) blood tests