The mass of a hummingbird is 4,000 milligrams. Use a
proportion to convert 4,000
milligrams to grams

PLEASE HEL

4 grams

Step-by-step explanation:

There are 1000 milligrams in a gram, so the proportion is 1g/1000mg=xg/4000mg

when you cross multiply, you get 1000xg=4000mg/ divide both sides by 1000 and you get xg=4, meaning x=4 grams

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50