The function f(t)= -16t^2 + 32t + 42 gives the height h (in feet) of water from a fountain t seconds after it leaves the spout

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

What is the celsius temperature that is equal to 94 degrees fahrenheit using the formula f=9/5 c+32

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?