Answer:
The variables change
Step-by-step explanation:
Since we can't subtract c from -b we multiply both variables by a because the question is telling us to subtract b and c then multiply the awnser by a, but we don't know what b and c is so we just multiply b and c by a. In the end we get ab-ac
Simplified to its simplest form would be 15/4. The GCD of them all would 400, so you divided them by 400.
Answer:
The value of the car will be 
Step-by-step explanation:
we know that

so
Let
x-----> the value of the car after 11 years

Answer:
$1939
Step-by-step explanation:
easy, just half the total need!
Answer:
0t=8
Step-by-step explanation:
3t+4=12+3t
3t-3t=12-4
0t=8