In a certain experiment, the chance of a success, p, was 78% while the chance of failure, q, was 22%. What is the probability that out of 15 attempts, 12 were successful? Use the formula, P (n) = nCr (Pr)(qn-r) ​

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You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Asporting good store is offering 30 percent off of the original price(x) of football cleats. the discount will be reduced by an another $7 before sales tax.