F + 8 1/2 < -1 algebra answer

An arrow is shot vertically upward at a rate of 180ft/s. use the projectile formula h=−16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 420ft. round your answer(s) to the nearest tenth of a second.

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20