Question 1
Part A:
We must evaluate the following intervals:
if d> = 5:
The function for this case is:
C = 4.70d
if d <5:
The function for this case is:
C = 4.70d - 1
Part B:
We evaluate the functions corresponding to the number of days:
For d = 4
C = 4.70 * (4) - 1 = 17.8 $
For d = 7
C = 4.70 * (7) = 32.9 $
Answer:
option 3
Question 2:
For this case, what you should do is find the linear function that best suits the problem.
We have then:
y = 3x + 3
We evaluate for different values of x to compare with the table:
f (0) = 3 (0) + 3 = 3
f (1) = 3 (1) + 3 = 6
f (2) = 3 (2) + 3 = 9
f (3) = 3 (3) + 3 = 12
f (4) = 3 (4) + 3 = 15
We observe that all the values coincide with the table.
Answer:
option 2.
