Answer:
1. C -> Marty's with a slope of 1/3
2.C -> 2x + 5y = -15
3. C -> y = 1/4x + 2
4. A -> x - 4y = 8
5. D -> 5
Answer:
The price of one DVD is 4 and price of one CD is 5
Step-by-step explanation:
2DVDs and 2CDs = 18
3DVDs and 2CDs = 22
DVDs can be x and CDs can be y:
2x + 2y = 18
3x + 2y = 22
Subtract to get:
-x = -4
x = 4
So the price of one DVD is 4
Plug that into one of the original equations:
2x + 2y = 18
2(4) + 2y = 18
8 + 2y = 18
2y = 10
y = 5
So the price of one CD is 5
Answer:
D
Step-by-step explanation:
x+4y=8
4x+y=2
add
5x+5y=10
so system is
x+4y=8
5x+5y=10
Answer:
Sum = 140
Step-by-step explanation:
We find all the terms, we know that every consecutive term, we add 2 until we reach 23:
Sum = 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23
Sum = 140
