What is y=-1/4x+4 written in standard form? plsss help!

(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 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Find the roots of the equation below. x^2 - 6 + 9 = 0