1.
Table: 1 - P2600 ; 2 - P3200 ; 3 - P3800 ; 4 - P4400 ; 5 - P5000
a. ANSWER: P5600
SOLUTION: F = 2000 + 600d
d = 6
F = 2000 + 600(6) = 5600
b. ANSWER: 13 days
SOLUTION: F = 2000 + 600d
10000 >= 2000 + 600d
8000 >= 600d
13.3333 >= d
Since the number of days that he can rent the car can only be a whole number, the maximum number of days that he can rent the car is 13.
2. ANSWER: P10
SOLUTION: Let x be the total fee for the call and m be the number of minutes that the call lasted
x = 3 + (m - 2)
m = 9
x = 3 + (9 - 2)
x = 3 + 7 = 10
