Check all of the polynomial functions that have 2 as a root. a. h(m) = 8 – m^3 b. f(g) = g^3 – 2g^2 + g c. f(a) = a^3 – 4a^2 + a + 6 d. f(x) = x^3 – x^2 – 4

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?