Help me with this please

(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.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]