IQ Formula: Mental Age divided by Physical Age x 100 = IQ
Therefore his IQ is 25 divided by 20 x 100= 125 IQ
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The answer is "token economy".
A token economy is an arrangement of possibility of administration in light of the methodical fortification of target conduct. The reinforcers are images or "tokens" that can be traded for different reinforcers. Marbles are being utilized as tokens that would then be able to exchanged for a coveted protest—the computer game.
Because the Europeans had already been exposed to the diseases and had built an immunity to it, and the Native Americans hadn't, hope this helps
Households sell resources to the government—which uses those resources to produce government services—in return for income. Business firms sell the goods and services they produce to the government for revenue.
