Answer:
B ( 3.7 , -1.1)
Step-by-step explanation:
y = 3x - 12.2.......equation 2
Putting equation 2 I. equation 1
x + 3x - 12.2 = 2.6
4x = 2.6 + 12.2
4x = 14.8
Therefore x = 3.7
Now
y = 3 * 3.7 - 12.2
= 11.1 - 12.2
= -1.1
The number is 23.
5n + 7 = 122 Subtract 7 on both sides
5n = 115 Isolate the variable by dividing 5 on both sides
n = 23
4c < 28
divide by 4 both sides
x < 7
Very sorry if this is no help
