Archie Baines Arthur is organising his collection
of DVDs. He has 56 altogether.
The ratio of comedy films to
action to horror is 2 : 7:5

Step-by-step explanation:

x - is the amount of DVDs

so 2x + 5x + 7x = 56

14x = 56

x = 4

so comedy is 2x4 = 8; action 7x4 = 28 and horror is 5x4 = 20 DVDs

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

c. 1,233 miles