According to everything you’re writing down this doesn’t make any sense depending on someone’s age you need to be more precise with your question or post a picture
This is found using the binomial distribution with P(H) = 1/2 and P(T) = 1/2 n = 15 and r = 10
= nCr(0.5)^(15-10)(0.5)^10
= 15C10 * 0.5^15 = 0.0916 or 9.16%
F(x) represents a function if there’s an equation following it. In this case, it’s FALSE
Let x be the number of tickets sold
Cost of x tickets = 32.5.x
Cost of convenience = 3.3.x
Process charges (for ONE ORDER, whatever the number of tickets) = $5.90
Hence:
$32.5(x) + $3.3(x) + $5.90 = $220.70
$35.8(x) = $220.90-$5.90
$35.8(x) = $214.8
And x = 214.8/35.8 = 6 tickets
