Answer:
y = 3.95(x) + 10
Step-by-step explanation:
The equation of the money spend will expressed as
Total number spend = 3.95 multiply number of DVD rented (x) + 10 membership
Thus equation is y = 3.95(x) + 10
A linear equation modeling the total cost of DVD rentals for a year, given a yearly membership fee and cost per DVD, is y = 3.95x + 10. This equation represents the cost structure, where 'y' is the total cost, 'x' is the number of DVDs rented, 3.95 is the cost per DVD and 10 is the annual membership fee.
This problem is an example of a linear equation, which describes a straight line on a graph. In this case, the line represents the total cost of renting DVDs for a year. The y-intercept represents the fixed part of your cost - the annual membership fee, and the slope represents the variable part of the cost - the price per DVD rental.
The equation that models this situation is y = 3.95x + 10. Here, 'y' represents the total cost, 'x' represents the number of DVDs you rent, 3.95 is the slope (or cost per DVD), and 10 is the y-intercept (or the cost of membership).
In this scenario, for each additional DVD you rent (increase in x), your total cost (y) increases by $3.95 which is the slope of the line. The line crosses the y-axis at $10, which is the fixed membership cost.
#SPJ2
We want to solve a system of linear equations, we will get that the solution is (8, -22)
A system of equations is a group of equations that we must solve simultaneously.
Here we have two lines defined by tables:
line 1:
x y
-4 26
-2 18
0 10
2 2
line 2:
x y
-4 14
-2 8
0 2
2 -4
Remember that a line is written as:
y = a*x + b
Where a is the slope and b is the y-intercept.
We know that if a line passes through the points (x₁, y₁) and (x₂, y₂), then the slope can be computed as:
With this we can find the slope of the first line, using any pair of the given points, I will use (0, 10) and (2, 2)
And we know that the line passes through (0, 10), then the y-intercept is equal to 10.
y = -4*x + 10
For line 2 we can use the points (0, 2) and (2, - 4), so we get:
And the y-intercept is y = 2, then the line is:
y = -3*x + 2
Now we must solve:
-4*x + 10 = -3*x + 2
10 - 2 = 4x - 3x
8 = x
Now we evaluate x = 8 in any of the two lines:
y = -3*8 + 2 = -22
Then the solution of the system is (8, -22)
If you want to learn more, you can read:
Answer:
(8,-22)
Step-by-step explanation:
i just took the test and checked
Answer:
3x+8
Step-by-step explanation:
First, we can write the sum into a mathematical expression:
The sum of (x+5) and (2x+3)
(x+5)+(2x+3)
However, we do not need the parenthesis. It is unnecesarry here as we are just adding the two parts:
x+5+2x+3
Using commutative property, we can rearrange the symbols so that the x's are with each other and the numbers are with each other:
x+2x+5+3
Now we can simplify the expression:
3x+8
Hope this helped :)
~Please show work :)
Answer:23
Step-by-step explanation:ok