Question 172556
 I have a question im having real trouble with so i could use some help badly its a 2 part question 
Suppose the height of this motorcycle is modeled by H=-20t + 45+ where t is the amount of time in secounds since he started his jump 
use a graph to help you find the maximum height 
Use the quadratic formula to determine how long he was in the air
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H=-20t + 45+  Something's missing.