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The number in the parentheses is the rate of change. Because this number is less than 1 it is a decrease, so it is a decay.
The percent decrease is 1 - 0.63 = 0.37 = 37% decrease
200/5=40
He can buy 40 pens!!
Hope this helps!!
Answer:
you'll find lots of clouds over tropical climates and practically no clouds over desert clmates.
