Modeling Consumer Price Index The consumer price index (CPI) is calculated by averaging the prices of various items after assigning a weight to each item. The following table gives the consumer price indexes for selected years from 1940 through 2002, reflecting buying patterns of all urban consumers, with x representing years past 1900. Find an exponential regression equation for these data. Round coefficients in equation to three decimal places, if necessary.
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Find the present value of the annuity. Assume that all interest rates are annual rates.Paul has agreed to contribute $116 per year for the next 3 years to his alumni association. However, he wishes to contribute this as one lump sum now. Assume an interest rate of 8%, and determine what lump sum he should contribute.
A. $309.14 B. $311.04 C. $307.24 D. $298.94
Body surface area (BSA) is often used to calculate dosages for some drugs. BSA is calculated in square meters using a person's weight and height.BSA = 
Suppose an adult whose height is 70 in. and weight is 68 kg is to receive a drug that has a recommended dosage range of 10-12 mg per square meter. Find the dosage range for this adult. Round to the nearest hundredth, if necessary.
A. 7.21 mg - 8.66 mg B. 183.26 mg - 219.91 mg C. 18.33 mg - 21.99 mg D. 11.5 mg - 13.8 mg
Solve the problem.A rotating beacon is located 11 ft from a wall. If the distance from the beacon to the point on the wall where the beacon is aimed is given by a = 11
, where t is in seconds, find a when t = 0.38 seconds. Round your answer to the nearest hundredth.
A. 22.49 feet B. -15.09 feet C. 15.09 feet D. 29.88 feet
Evaluate the expression for the given values. Expression your answer as a fraction unless otherwise indicated.
x = 2, y = 6
A. 
B. 
C. 
D. 