Annuity a pays 1 at the beginning of each year for three years. annuity b pays 1 at the beginning of each year for four years. the macaulay duration of annuity a at the time of purchase is 0.93. both annuities offer the same yield rate. calculate the macaulay duration of annuity b at the time of purchase

The economic advisor of a large tire store proposes the demand function d(p)equalsstartfraction 1900 over p minus 40 endfraction , where d(p) is the number of tires of one brand and size that can be sold in one day at price p. answer parts (a) through (e) below. a. recalling that the demand must be positive, what is the domain of this function? the domain consists of all possible values of ▼ for which ▼ p d(p) ▼ does not exist. is positive. is zero. is negative. exists.

U. s. internet advertising revenue grew at the rate of r(t) = 0.82t + 1.14 (0 ≤ t ≤ 4) billion dollars/year between 2002 (t = 0) and 2006 (t = 4). the advertising revenue in 2002 was $5.9 billion.† (a) find an expression f(t) giving the advertising revenue in year t.

Almost 80% of business owners are clueless about the competition, resulting in a) lost market share and customers. b) needless lawsuits. c) uninspired products. d) lack of perseverance