Answer:
a) y=0.75x+12 (y=ax+b)
b)a=0.75
c)b=12 (b=y-intercept, the place where the graph hits the Y axis). It's the starting cost, the cost that will be paid only one time
d) starts at (0,12) and goes up +0.75 each time
What prism I think you forgot something
Answer:
1) find d or distance between numbers
2) equation: an=a1+(n-1)d
3) an is nth term
a1 is first number in sequence