Answer:
R is a function.
Step-by-step explanation:
The answer is acd
D=3+4h becausw they are counting by 3 starting from four
30
Let the cat have a weight of x.
Then, the dog weighs 9x.
The hamster weighs x/20.
The mouse weighs 3x/10.
So, the dog is 9/(3/10) = 30 times as heavy.
