Not really a fan of math but slope is really confusng

Asap the total attendance for all of a baseball league in 2012 was about 7.5×107 fans, while the attendance for the tornadoes in 2012 was about 1.5×106 fans. about how many times more was the attendance for the entire baseball league than the attendance for just the tornadoes? 50 times more 10 times more 2 times more 5 times more

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

What are the first 4 terms in the multiplication pattern given by the formula 2×4n