Jamie has8/10 of a candy bar left over. he wants to split it into 1/3 pieces. how many 1/3 pieces can he make?

I’m stuck on this i don’t understand.

(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.

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83