the question is in the DESCRIPTION!

Question

Mary works in a bakery. She can bake 12 cakes (c) in 1 day (d).

Write an equation in the form of c=rd , that represents the relationship between the number of cakes (c) and days (d), where r is the constant of proportionality.

Answer 1

To build the equation we need to find the value for the constant of proportionality, r.

 

Lets start with the original equation, c=rd.

 

Now lets plug in for the c and d given.

 

12 cakes=r(1 day).  This means that r=12 cakes/day or just 12 if you drop the units.

 

The equation becomes c=12d where d is the number days and c is the number of cakes.

 

Good Luck

 

Cheers

 

-Chris