I did a practice yesterday and I got those three problems wrong but I just don't know how to do them. I will provide the correct answers but please show me how to solve these problems. Thanks you.
1. If the speed of x meters per second is equivalent to the speed of y kilometers per hours, what is y in terms of x?
Answer: 18x / 5
2. If xy=1, what is the value of 2^(x+y)^2 / 2^(x-y)2?
Answer: 16
3. For which of the following functions if f(a+b)=f(a) + f(b) for all positive numbers a and b?
Answer= -3x
1. If the speed of x meters per second is equivalent to the speed of y kilometers per hours, what is y in terms of x?
Answer: 18x / 5
2. If xy=1, what is the value of 2^(x+y)^2 / 2^(x-y)2?
Answer: 16
3. For which of the following functions if f(a+b)=f(a) + f(b) for all positive numbers a and b?
Answer= -3x
