Consider an arma process whose ar polynomial is (z)=1 z2/4 and whose ma polynomial is ✓(z) = 1 + z/3. complete the following: • factor the ar and ma polynomials. • determine whether or not (z) and ✓(z) share common factors. • for the arma(p, q) process corresponding to (z) and ✓(z), what are p and q? • is the arma(p, q) process corresponding to (z) and ✓(z) invertible? justify your answer. • is the arma(p, q) process corresponding to (z) and ✓(z) causal? justify your answer.

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?