The total tickets sold at the fair = 50 tickets.
Kayla and Bianca each bought one ticket, it could be any numbered. We can start with anyone and find their probability.
If Kayla got ticket numbered #7, its probability would be 1 out of 50.
Then there would be 49 tickets remaining for Bianca at the fair.
If Bianca got ticket numbered #10, it probability would be 1 out of 49.
Total probability of (Kayla getting #7 AND Bianca getting #10) would be 1/(50x49) = 1/(2,450) = 0.0004081 = 0.0408%.
Hence, final answer is 
If you take 438 divided by 4 = 109.5 109.5 + 74.5 = 184 74.5 x 4 = 298
Slope is rise over run or
(y1-y2)/(x1-x2)
(x,y)
x1=17
x2=-11
y1=-6
y2=7
slope=(-6-7)/(17-(-11))=(-13)/(17+11)=(-13)/(28)=
the slope is -13/28
-147 +25 = 122 i am pretty sure this is right but i might be wrong