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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.

In what form is the following linear equation written y=9x+2

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18