Answer:
$514.50
Step-by-step explanation:
7+4+2+8=21
$12.25x21=$514.50
Its speed in what, like miles or what?
D(x)=1375-110x
when it reaches 0 it has reached destination
0=1375-110x
add 110x to both sides
110x=1375
divide both sides by 110
x=12.5
answer is 12.5 hour