A football is kicked into the air. Its height above the ground changes according to the equation y --16x2 + 80x +3, where x = time in seconds and ) = height in feet. The ball reaches a height of 67 feet twice: once on the way up and once on the way down. How much time does the ball spend at or above a height of 67 feet?

(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.

In the rectangle below ac=30 units what is de

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?