Answer:
a
Step-by-step explanation:
Question 1 Answer: 1cm= 3 feet. I say this because if there is 5 cm on the blueprint, you can do 3 feet for every cm and get 15 feet.
Question 2 Answer: 1 in=1.5 feet. 6÷4= 1.5 therefore the scale factor is 1.5
I can't quite see the other answers if you could zoom in i could answer those as well.
20x-18x=6+8
2x=14
X=7
Answer
A3=2.6
a4=?
a5=-.4
note that
-2d=-.4-2.6
-2d=-3
-d=-3/2
d=1.5
thus the 4th term is 2.6-1.5=1.1 done