Question 1077281
Selling fewer than 20 pizzas is 0.19, the probability of selling 18 or 19.
He makes in profit $7 on each pizza, because it costs him $5 to make one and he gets $12 to sell it. That is where the $7 profit comes from.
To make > $100 a day, he has to also make $50 for the overhead. x=pizzas, and 12x>$50+5x+100
7x > 150
x >=22
Probability of selling 22 or more is 0.32.