Not sure about the last question
Answer:
The first one is right but the second one is wrong. It should be option 3.
Step-by-step explanation:
Answer:

Step-by-step explanation:
First you can notice the y-intercept is 4. Then notice how the y value increases exponentially based on the x valie, making it non-linear, rather a porabla.
Answer:
a. 15cm
b. 36ft
c. 35in
d. 44mm
e. 13km
f. 25ft
Step-by-step explanation:
a. 4cm + 6cm + 5cm = 15cm
b. 9ft + 9ft + 9ft + 9ft = 36ft
c. 5in + 7in + 7in + 8in + 8in = 35in
d. 12mm + 12mm + 10mm + 10mm = 44mm
e. 4km + 3km + 4km + 2km = 13km
f. 6ft + 3ft + 4ft + 4ft + 8ft = 25ft