5. 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.
a. Complete the table.
weeks
kilograms of rice ieft
6 1:65-4.546
12
w
kilograms of rice remaining
70
60
50
40
88R320
10
2
4
6
8/10
12
14
weeks
b. Use function notation to write a rule that defines function r.
c. On the coordinate plane, sketch a graph of function r.
d. Solve the equation r(w)=30 and explain what the solution means in this situation.