The height,s, in feet of a rock thrown upward at an initial speed of 68ft/s from a cliff 48 ft above the ocean beach is given by the function s(t) = -16t2(squared) + 68t + 48, where t is the time in seconds/ Find the maximum height above the beach that rock willl attain.

On wet concrete the stopping distance, s in feet of a car traveling at v miles per hour is given by the function s(v) = 0.0o6v2 (squared) + 1.4v. What is the mximum speed at which a car could be traveling and still stop at a sign 52ft away?

Find two numbers whose difference is 86 and whose product is a minimum..

I dont get the problems. Can someone show me how to do it? show me and did you get answer. I really appreciate it. Thank you!