From your answer choices, look for an answer choice that has any number in the x-coordinate, but has 8 in the y-coordinate of the point. So: (x,8)
If you distribute, then you get -10x+7.5
Note how -2.5 times 4x = -10x and how -2.5 times -3 = 7.5
The idea is that you multiply the outer term (-2.5) by each term inside
Answer: 195
Step-by-step explanation: (3x15)+(5x16)+(2x17)+(2x18)=195
3x = -5y -------------- (1)
6x - 7y = 17 --------- (2)
From (1):
3x = -5y
x = -5/3 y ---------- sub into (2)
6 (-5/3 y) - 7y = 17
-10y - 7y = 17
-17y = 17
y = -1 ------------ Sub into (1)
3x = -5 (-1)
3x = 5
x = 5/3
Ans: x = 5/3, y = -1
O+o+2>36
2o>34
o>17
o1>17
o2>19
o is equal to odd number
