B² - 16a + 6
(7)² - 16(1/2) + 5
49 - 8 + 5
49 -13
36
-------------------------------
3b - 2a - 9
3(7) - 2(1/2) - 9
21 -1 - 9
20 - 9
11
-------------------------------
16a - b
16(1/2) - 7
8 - 7
1
-------------------------------
3(7) - 2(1/2) - 9
21 -1 - 9
20 - 9
11
-------------------------------
6(1/2)(7)
3(7)
21
-------------------------------
First off all, let's find

.
This shows that Bai found the correct quotient.
If

, then

. Using this rule, you have to check that

is equal to product

.
Thus, Bai checked his work using multiplication correctly.
Answer: Correct choice is A.
Answer:
y = 
Domain = [3, infinity)
Step-by-step explanation:
x = 3y^2 + 3
3y^2 = x - 3
y^2 = (x-3)/3
y = 
The correct answer is 2x/3 -1
Answer: 53.333333333
Step-by-step explanation: