Answer:

Step-by-step explanation:
To evaluate f(4) substitute x = 4 into f(x)
f(4) = 5 ×
= 5 ×
= 
That’s the answer your welcome
Answer:
5
Step-by-step explanation:
The sequence is a "/2 sequence", which means each number equals half of the previous one.
40 is half of 80.
20 is half of 40.
10 is half of 20.
5 is half of 10.
Hope it helped,
BioTeacher101
i hope this helps you......
Answer:
XZ = XY+ YZ
8.9=5.5+2c
2c= 8.9-5.5
2c=3.4
c=1.7
YZ = 2c=3.4
Step-by-step explanation: