The official answer is 1/5 nah sike I guessed it’s probably wrong
6a. y=-8(x-10)²
6b. y=(.15)(x+6)²
The discount is $8.40. Just multiply 42 by 20 and you get 840 then move the decimal two places to the left.
26 = orchestra
11 + 13 = 24 = choir
26 x 2 = 52 = band
52 + 24 + 26 = 102 people in all the following on top.
Hope this helped!
Nate