What is k to the -2 power times k to the -3 power but Simplify the expression. Write the expression using only positive exponents. $k^{-2}\cdot k^{-3}=$

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?

What percent of 18 is 24? and plz explain thx.

Which expression is equal to (f+g)(x)?