Answer:
Hence, the part of equation that represents the constant of proportionality is:
0.07
Step-by-step explanation:
We are given a equation in terms of variable t and c as:
where t is the tax based on the cost, c of an item.
The constant of proportionality is the ratio between two directly proportional quantities.
Here the two quantities are t and c.
Also,
Hence, from the definition of constant of proportionality we observe that the part of the equation that represents the constant of proportionality is:
0.07