Answer:
Step-by-step explanation:
Let
x -----> the number of albums Floyd sold last month
we know that
The number of albums Floyd sold last month multiplied by $12 for each album plus a base rate of $200 must be equal to the total earned.
Last month he earned a total of $644
so
The linear equation that represent this problem is
Solve for x
subtract 200 both sides
Divide by 12 both sides
Answer:
X + Y = 1 ------1
X - 2y = 4 ------2
Solving by substitution method
X = 4 + 2y -----3
Putting the value of X in equation 1
4 + 2y + y = 1
4 + 3y = 1
3y = 1 - 4
3y = (-3)
y = (-3) /3
<h3>y = (-1) </h3>
Putting value of y in equation 3
X = 4 + 2(-1)
X = 4 - 2
<h3>X = 2 </h3>
Nobody wants to do these because, I don't know why.
These are the equations given:
31=B+J
B=2J+4
So you substitute B=2J+4 into 31=B+J
31=2J+4+J
Solve
31-4=3J+4-4
27=3J
27/3=3J/3
9=J
Jake has 9 cd's.
