Please Helllp!!! Marianne tracks her progress on her reading assignment in the table below

Which is an equation for the nth terms of the sequence 12,15,18,21

(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.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer