HE was planning to pay 30$ but it ended up as 60$ so in that case it´s 42$.
Answer:
m - 1
c - 6
Step-by-step explanation:

The equation is in slope-intercept form.
y = mx + c
m - slope
c (or b) - y -intercept
Usually if the slope is one it will not be written.
y = 1x + 6
The slope is one.
6 takes 'c's place, so it is the y-intercept.
Hope this helps.
Answer:
Yes they are.
Step-by-step explanation:
Because both equal 6/9 I think