The answer is (f * g) (x) = 12x
Answer:
Ellen invested $60 and Bob invested $140
Step-by-step explanation:
let the two amounts invested by 3x and 7x
(notice 3x : 7x = 3 : 7 )
then 3x + 7x = 200
10x = 200
x = 20
then 3x = 3(20) = 60
and 7x = 7(20) = 140
60+140=200
Kenny bought 4 1liter bottles of water
1liter is equal to 1,000 milliliters (milli means 1,000)
What that means is that in each bottle of water that he purchased, he has 1,000 milliliters
He has 4 bottles, so we simply take
4(bottles) x 1,000(amount of water in each bottle)
4 x 1,000 = 4,000 milliliters
30 I believe, sorry if I am wrong, I am bad at math and history.
