Select the relation that is a function. a. {(21, 11), (21, 10), (21, 9), (21, 8)} c. {(-6, -5), (3, 2), (10, 8), (3, 3)} b. {(-2, -, -1), (16, 3), (-3, -9)} d. {(5, 10), (-3, 10), (-3, -10), (4, 7)} select the best answer from the choices provided a b c d

In a sample of 200 residents of georgetown county, 120 reported they believed the county real estate taxes were too high. develop a 95 percent confidence interval for the proportion of residents who believe the tax rate is too high. (round your answers to 3 decimal places.) confidence interval for the proportion of residents is up to . would it be reasonable to conclude that the majority of the taxpayers feel that the taxes are too high?

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone. which are equivalent equations?