Answer:
x=450
Step-by-step explanation:
1. you cross multiply 1200x3= 3600
2. Divide 3600 by 8
3. Solution is 450
Y=15-0.04x since the value at x=0 is still 15, then it starts from 15, and it goes down 0.4 after 10=x so 0.4/10
Yo it is x,y the one on the bottom is x the one on the top is y