Find the polynomial function with leading coefficient 3 that has the given degree and zeros.
a.) degree 3, with -2, 1, and 4 as zeros

As a manufacturer of golf equipment, the spalding corporation wants to estimate the proportion of golfers who are left-handed. how many golfers must be surveyed if we want 99% confidence that the sample proportion has a margin of error of 0.025? assume that a previous study suggests that 20% of golfers are left-handed.