The owner of a small restaurant bought 75 kilograms of rice. Each week, the restaurant uses 4.5 kilograms of rice. Function r gives the remaining amount of rice, in kilograms, as a function of the number of weeks since the restaurant owner bought the rice.

Amount of remaining rice = r = 75 - 4.5w

Total amount of rice = 75 kg

Rice use in each week = 4.5

Equation for remaining week

Number of week = w

Amount of remaining rice = r

So.

Amount of remaining rice = Total amount of rice - (Rice use in each week)(Number of week)

r = 75 - (4.5)(w)

r = 75 - 4.5w

link

r(t) = 75 kg - (4.5 kg/wk)w

Step-by-step explanation:

Let r(t) represent the amount of rice remaining after w weeks.

Then:

r(t) = 75 kg - (4.5 kg/wk)w

7

step-by-step explanation:

answer: the common difference is -0.10