Yea... i need help have to turn this test in!

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.