Answer:
9
Step-by-step explanation:
Answer: B, D, E
Step-by-step explanation: Its very easy to check, For B, you notice that it is the same, only the numbers are swapped. In multiplication, this is perfectly fine. For D, I just knew that the answer was 12x+9. And in D, there are 3 4x and 3 threes', so that one was correct. And for E, all you have to do is to multiply accordingly to the distributive property
She writes the equation of the function like this: E(x) = 20x - 50, where x is the number of doors she knocks on during the week and E(x) is her earnings for the week in dollars.
What does the slope of Jessica's function represent?
a. For each additional set of books she sells, her earnings will increase by $20.
b. For each additional door she knocks on, her earnings will increase by $20.
c. For each additional set of books she sells, her earnings will increase by $50.
d. For each additional door she knocks on, her earnings will increase by $50.