11 the greatest common number between 5,11
He made a mistake on step 2, because he already flipped the fraction 5/8 to 8/5, then hi flipped it back to 5/8, hope this helps.
The answer should be 5.5
because 11 x 0.5 = 5.5 so 5.5 / 11 = 5.5
The Answer would be 9075 you could also just multiply it on the calculater
(A) The cost would be $6,600 because 100 guests would be $35 * 100 which is $3,500. Then, add that amount to the cost of the venue. $3,100 + $3,500 = $6,600.
(B) C = $3,100 + (n - 50) * 35
(C) 118 guests