Answer:
18
Step-by-step explanation:
we know there are 5280 feet in 1 mile, and there are 3600 seconds in 1 hour.

Answer:
15/31
Step-by-step explanation:
substitute -9 were there's x in the function
f(-9)=2(-9)+3/4(-9)+5
=-18+3/-36+5
=-15/-31
the negatives cancel giving you
15/31