Answer:
Step-by-step explanation:
Let's solve for x.
−3x−4y=5
Step 1: Add 4y to both sides.
−3x−4y+4y=5+4y
−3x=4y+5
Step 2: Divide both sides by -3.
−3x
−3
=
4y+5
−3
x=
−4
3
y+
−5
3
Answer:
x=
−4
3
y+
−5
3
The representations are:
- D represents the price of each postcard
- 35 - 5D represents the number of postcard sold
- D(35 - 5D) represents the income from the sales
<h3>What are expressions?</h3>
Expressions are mathematical statements that contain all of the followings
- Numbers
- Mathematical operator
- Variables
The expression is given as:
From the question, we understand that:
- D represents the price of each postcard
- D(35 - 5D) represents the income from the sales
The above highlights mean that: 35 - 5D represents the number of postcard sold
Read more about expressions at:
brainly.com/question/4344214
Answer:
the second one
Step-by-step explanation:
y is postitive when x < -1 and x > 3, but y is decreasing only when x < 1 so the case where both are true is when x < -1 option 2
I would say 3 because terms are separated by a plus or minus sign and there are 2 subtraction signs separating 3 expressions.