HELP What is the solution to the equation f(x)=4?

(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.

If 25% of y is 30, what is 60% of y?

W-16=-12 solve each one step equation plz