y = -7x - 13
y = -8x - 14 Subtracting:-
0 = x + 1
x = -1
From fisrst equation y = -7(-1) - 13 = -6
answer is x = -1 and y = -6
Answer: 110
Reasoning: all of the numbers should add up to 360.
140+110=250
360-250=110
The angles of 110 look the same, go for it.
Answer: 30%
Step-by-step explanation:
Given: Cupcakes have sprinkles = 15
Cupcakes didn't have sprinkles = 35
Total cupcakes = 15+35 = 50
The percentage of the cupcakes had sprinkles = 

Hence, the percentage of the cupcakes had sprinkles = 30%
Y = 4x -9
y = x-3
Replace the "y" in above equation by x-3
x - 3 = 4x - 9
-3x = -6
x = 2
Then replace x = 2 to the beneth
y = 2 - 3 = -1
It would be the 1st one ( 12in× 1in/2.5ft) the reason is you want the measurements to match so that way when you solve the equation you are multiply 12 by 2.5 to get the number of inches