First solve for x in the first equation
x + 7y = 0
x = -7y
since x = -7y we can substitute -7y into the other equation wherever there is an x
2x - 8y = 22
2(-7y) - 8y = 22
-14y - 8y = 22
-22y = 22
y = -1
Now let's substitute -1 back into either of the original equations so we can solve for x
x + 7y = 0
x + 7(-1) = 0
x - 7 = 0
x = 7
So your solution set is
(7, -1)
First you need to form a worthy equation using slope-intercept (y=mx+b). Do that by counting the slope and finding the y-intercept. Then you have to choose between < or > to make it more accurate. In order to do so, you would have to pick a point with a point x and y and see wether or not I’m the equation is true when you put it in the blanks. If it’s true then you would shade whichever region the point is. If it’s false then shade the opposite region.
Good luck!!!!!!! :)
4(8 + 3x)
4(8) + 4(3x)
32 + 12x
Answer: Multiples of 5 are 5 , 10 , 15 , 20 , 25 , 30 , 35 , 40 , 45 , 50 , 55 , 60.
Good luck !
Answer:
-3x^2+100x-1500
Step-by-step explanation:
Create an equation for the total cost.
1500+200x
1500 is the fixed cost, plus the additional 200 it costs to create a scooter.
Then you need to subtract that from the revenue, which is provided in a function. 300x-3x^2
[300x-3x^2] - [1500+200x]
Solve.
100x - 3x^2 -1500
Write in standard form.
-3x^2+100x-1500
