I think you do multiplying fractions. So 1 1/2 x 20
Answer:

Step-by-step explanation:
The formula of a volume of a cylinder:

r - radius
H - height
We have r = 3in and H = 9in. Substitue:

Answer: -2
Step by step Explanation: y=k/x
Replace y with 7 and x with -2
7=k/-2 gives you -14
then you replace k with -14 and x with 7
Y=14/7 gives you -2
3/10 -c
2/10-b
9/10- h
7/10-g
1/10-a