Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height? show your work.

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22 seconds

Step-by-step explanation:

The maximum height is at the vertex of the parabola.

For a parabola y = ax² + bx + c, the vertex is at x = -b/(2a).

Here, a = -16 and b = 704.

t = -704 / (2 × -16)

t = 22

It takes 22 seconds for the projectile to reach its maximum height.

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation: