Awater balloon is tossed into the air with an upward velocity of 25 ft/s. its height h(t) in ft after t seconds is given by the function h(t) = − 16t2 + 25t + 3. show your work.

19. after how many seconds will the balloon hit the ground? (hint: use the quadratic formula)

20. what will the height be at t = 1 second

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

The graph shows the distance kerri drives on a trip. what is kerri's speed?

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !