1. nth term=3n-1
20th term=3(20)-1=60-1=59
2. nth term=-2n-4
20th term=-2(20)-4=-40-4=-44
3. nth term=n-
20th term=(20)-
=
-
=
4. nth term=-n+
20th term=-(20)+
=-
+
=-
The function defined by d = 50 + 312t – 16r^2 gives the height in feet of a cannonball t seconds after the ball leaves the canno
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