If 4200 is invested a savings account for which interest is compounded semi-annually and if the 4200 turns into 4900 and 4 years what is the interest rate of the savings account

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.

Let f (x) = x e8x. find a formula for the nth derivative of f, where n is any positive integer. use x and n in your answer if needed. f (n)(x) =

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1