Answer:
It is A
Step-by-step explanation:
2x + y = 5
y + 3 = 2x
From equation 2:
y = 2x - 3
Substituting in the first equation:
2x + 2x - 3 = 5.
Answer: a
Step-by-step explanation:
Answer:
x = 3/4
Step-by-step explanation:
f(x) = -2×2 +4x +1
f(x) = -4 +4x +1
f(x) = 4x -3
3 = 4x
3/4 = x
x= 3/4