I would like a little help please. Gru has 20 minions. The minion population increases by 20 each week. El Macho has 80 evil minions. His population decreases by 10 minions each week. When will they have the same number of minions? How many minions??

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meaning of solution:

If you draw a card with a value of three or less from a standard deck of cards, i will pay you $43. if not, you pay me $11. (aces are considered the highest card in the deck.) step 1 of 2 : find the expected value of the proposition. round your answer to two decimal places. losses must be expressed as negative values.