Step-by-step explanation:
The first one will be:
7x^6 - 7x^5 +28x - 4x² - 60
And the second:
-9x⁴-3x²-4x²+5x
Answer: Option 'A' is correct.
Step-by-step explanation:
Since we have given that
Distributive law is defined as

According to option'A', we get that
a =- 3
b = 6
c = 0.4
d = 0.08
So, it becomes,

Hence, option 'A' is correct.
The two designers will charge same amount for 8 hours.
Step-by-step explanation:
Designer A charges;
Initial fee = $480
Charges per hour = $105
Let,
x be the number of hours, therefore, total cost for x hours will be;
A(x) = 480+105x Eqn 1
Designer B charges;
Initial fee = $840
Charges per hour = $60
B(x)=840+60x Eqn 2
When the amount will be same, both functions will be equal, therefore
A(x)=B(x)

Dividing both sides by 45

The two designers will charge same amount for 8 hours.
Keywords: function, division
Learn more about functions at:
#LearnwithBrainly
Answer:
18.18 /// 17.9982
Step-by-step explanation:
Multiplying by 100 means moving up the other number by two digits,
soo 100x (or 100(0.1818) is now 18.18
For the next one:
0. 1818
x 99
---------------
1.6362
16.3620
-------------
17.9982
I have no idea about that fraction part
Answer:
1.024
Step-by-step explanation:
:)