70 / 35 = 2
So the 70 pound dog weights double the weight of the 35 pound dog, so he will eat twice as much.
2 x 2.5 = 5 cups
Meaning he will eat 5 cups of dry dog food a day.
By the same logic a 140 pound dog would have to eat twice what a 70 pound dog eats, that is 10 cups of dry dog food a day, so 7 1/2 cups are not enough.
Challenge: per pound a dog eats more than a cat. Since you know a 140 pound dog eats 10 cups, you can dive 140 by 10, to find out that each cup feeds 14 pounds, so half a cup would be the amount of food to feed a 7 pound dog, meaning that a dog weighing 1 pound less than a 8 pound cat would need the same amount of food, so it eats more than a cat.
Answer:
no you will not use a table
The answer is
g(x) = 4x
The range would be [8, 3]
In order to find the range, simply plug each end of the domain into the equation.
f(x) = -x + 5
f(-3) = -(-3) + 5
f(-3) = 3 + 5
f(-3) = 8
Then the other side
f(x) = -x + 5
f(2) = -2 + 5
f(2) = 3
