Answer:

Step-by-step explanation:
Given that,
Distance, d = 514 miles
Time, t = 412 days
We need to find the unit rate in miles per day. Its rate is given calculated by dividing distance and time as follows :

So, the unit rate is
.
Answer:
B
Step-by-step explanation:
35+25y+15z=37500
x - 5z = 0
25y - 60z = 0
f(0) = 2(3)(0) = 0 ⇒ (0, 0)
f(1) = 2(3)(1) = 6 ⇒ (1, 6)
<u>rate of change from x = 0 to x = 1</u>
=
=
= 6
******************************************
f(2) = 2(3)(2) = 12 ⇒ (2, 12)
f(3) = 2(3)(3) = 18 ⇒ (3, 18)
<u>rate of change from x = 2 to x = 3</u>
=
=
= 6
*****************************************
Since it is the same line, they will have the same slope (aka rate of change).