Answer:
1 3 4 5
Step-by-step explanation:
Bc
Answer:

Step-by-step explanation:
(f g)(x) is equal to f(x) times g(x). So you just need to multiply both of the equations together. Use the foil method to multiply (x+2)(x-4)

I have attached an image to better explain the foil method
Answer:
Step-by-step explanation:
Using formula 
a= 650
b= 800
and c is the unkown
He saves $ 1.75 each day from his allowance.
<u><em>Explanation</em></u>
The ratio of his savings and expenses is 7 : 5
Lets assume, his savings = 7x dollar and his expenses is 5x dollar
Given that, his daily allowance is $3. So....

So, the amount of his savings each day 
The answer is down below following the order 6~9
6. A
7. C
8.C
9. D