In January, your ceramics class begins with 12 students. In every month after January, three new students join and one student drops out.
(a) Write a linear equation to model the situation.
(b) Graph a model
(c) Predict the size of your ceramics class in May and June.

Need help with a and c and then will try my hand at the graphing.

Question

In January, your ceramics class begins with 12 students.  In every month after January, three new students join and one student drops out.
(a)  Write a linear equation to model the situation.
(b) Graph a model 
(c) Predict the size of your ceramics class in May and June.

Need help with a and c and then will try my hand at the graphing.

annon · Answer

a) y=2x+12
c) may = 18
june = 20

anonymous · Answer

So if I understand correctly, the slope is 2 and the y-intercept is 12?

annon · Answer

yes

anonymous · Answer

Won't May be 20 and June 22 with this equation?

annon · Answer

after january. so not counts january

annon · Answer

so don't count January*
sorry couldnt spell

anonymous · Answer

But we start with 12 in January.  Then February would be 12 +3-1=14, right?

anonymous · Answer

So add two to each month:  March 16, April 18, May 20, June 22?

annon · Answer

ya sorry i miss counted

anonymous · Answer

Okay, just wanted to be sure when I applied your explanation that I was coming up with the correct answers.  Thanks.