19. The height h (in feet) of a certain rocket (launched from the top of a building)
t seconds after it leaves the ground is modeled by h(t) = -16t? +64t + 260.
a. Find the maximum height reached by the rocket.
(2 points)
(2,324
b. Find how long it takes for the rocket to hit the ground. (1 points)

Need on this geometry question. explain how you did it.

Barbara has a good credit history and is able to purchase a car with a low-interest car loan. she co-signs a car loan for her friend jen, who has poor credit history. then, jen defaults on the loan. who will be held legally responsible by the finance company and why? select the best answer from the choices provided. a. barbara will be held legally responsible because she has a good credit history. b. jen will be held legally responsible because she drives the car. c. barbara will be held legally responsible because she is the co-signer. d. jen will be held legally responsible because she has a poor credit history. the answer is a

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years