]your friend competes in a high jump competition at a track meet. the function h= -16t + 18t models the height h (in feet) of your friend after t seconds. after how many seconds is your friend at a height of 4? how many seconds will it take your friend to land on the ground? (show work ! ^^)

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

3x + 4y = 5 x- 3y = -7 solve by substitution

50 points~ ! i have to turn this in tomarrow