Answer:
3+5(n-1)
Step-by-step explanation:
first term (a)=3
common difference (d)=5
they an=a+(n-1)d
=>3+(n-1)5
=>3+5(n-1)
16 cards in 1 hour
8 cards, 1/2 hour
Make a proportion.
8/30min= x/60min
Solve the proportion by cross- multiplying.
30x=480
3x=48
x=16
x +12.1=65 equation
-12.1 -12.1
x=52.9 inches
16
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