What’s the correct answer?

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Hundred and tens tables to make 430 in five different ways