Answer:
7 ( 3x + 5y) = <u>21x+35y</u>
<u>Step-by-step explanation:</u>
<u>Step 1 : </u> apply the distributive law. <u>("the law relating the operations of multiplication and addition")</u>
<em>a ( b + c ) = ab + ac</em>
7 ( 3x + 5y) = 7 x 3x + 7 x 5y
<u>Step 2 : simplify </u>7 x 3x + 7 x 5y
So, the answer is <u>21x+35y</u>
Brainliest? :D and hope this helps!
Learn more about Distributive Property:
<u>brainly.com/question/2807928</u>
Answer:
Step-by-step explanation:
i'm not sure what the answer options are since they're not provided, but it's whichever option has a steady rate of change. (ex: money, time spent earning it; location, time spent driving; length in inches, length in meters)
If you are given that b = 2, then just plug it in:

So, your final answer is
0.
Answer:
I don't know sorry
sorry
Step-by-step explanation:
I don't know sorry
sorry
Answer:the independent variable is x, the number of hours of work.
The dependent variable is y, the total charge for x hours of work.
Step-by-step explanation:
A change in the value of the independent variable causes a corresponding change in the value of in dependent variable. Thus, the dependent variable is is output while the independent variable is the input
For each visit, he charges $25 plus $20 per hour of work. The linear expression that represents the total amount of money that Ethan earns per visit is y = 25 + 20x.
Since the total amount charged, y depends on the number of hours of work, x, it means that the dependent variable is y and the independent variable is x