Look at the problem: (3x - 5)(x + 4) Explain how to use the FOIL method to multiply the binomials.

3x^2 + 7x - 20

Step-by-step explanation:

The foil method means:

First (multiply the first numbers in each binomial)

Outside (Multiply the first number in the first binomial and second number in the second binomial)

Inside (Multiply the second number in the first binomial with the first number in the second binomial)

Last (Multiply the second number in both binomials)

Therefore the equation can be simplified into: (3x * x) + (3x * 4) + (-5 * x) + (-5 * 4)

After simplifying further you get: 3x^2 + 12x - 5x - 20

You can now combine the 12x and -5x into 7x

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation: