'which of the following is equivalent to the expression (x+3)(x-7)+(x+8)(x+3)? ' i use the distributive property and added etc. and my outcome was 2x^2+7x+3. i got the answer as (2x+1)(x+3) but only because it was an answer choice and was equivalent to 2x^2+7x+3. where did the 1 and 3 come from in (2x+1)(x+

Question part points submissions used suppose that 100 lottery tickets are given out in sequence to the first 100 guests to arrive at a party. of these 100 tickets, only 12 are winning tickets. the generalized pigeonhole principle guarantees that there must be a streak of at least l losing tickets in a row. find l.

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

If benito is selecting samples of five values from the table, which row will result in the greatest mean? population data row 1 4 2 2 3 3 row 2 3 3 4 3 2 row 3 2 4 3 4 3 row 4 3 4 4 7 3 row 1 row 2 r