WILL MEDAL AND FAN!!!!
Jose received $30 for his birthday and put it in his piggy bank. Each week, he puts 4 more dollars in his bank. The amount of money in dollars D in his bank is given by D = 4w + 30 where w is the number of weeks he has saved 4 dollars. His sister Marisol helped him find how much money he will have after 4, 15, 20, and 36 weeks. This table shows her results.
http://s15.postimg.org/qzgfiqknv/More_Math_Junk.png

What is the rate of change using Marisol's values for D and w and is this a linear or non-linear model?

A. The rate of change varies. It is a non-linear model.

B. The rate of change varies. It is a linear model.

C. The rate of change is 4. It is a linear model.

D. The rate of change is 1/4. It is a linear model.

Question

WILL MEDAL AND FAN!!!!
Jose received $30 for his birthday and put it in his piggy bank. Each week, he puts 4 more dollars in his bank. The amount of money in dollars D in his bank is given by D = 4w + 30 where w is the number of weeks he has saved 4 dollars. His sister Marisol helped him find how much money he will have after 4, 15, 20, and 36 weeks. This table shows her results.
http://s15.postimg.org/qzgfiqknv/More_Math_Junk.png

What is the rate of change using Marisol's values for D and w and is this a linear or non-linear model?

A. The rate of change varies. It is a non-linear model.

B. The rate of change varies. It is a linear model.

C. The rate of change is 4. It is a linear model.

D. The rate of change is 1/4. It is a linear model.